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All Journal JGE (Jurnal Geofisika Eksplorasi) Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika
Putra, Ahmad Dedi
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Earth & Planetary Sciences Education Physics Other

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PEMBUATAN MODUL INTERAKTIF TERINTEGRASI GUIDED INQUIRY MENGGUNAKAN APLIKASI COURSE LAB UNTUK MATERI USAHA, ENERGI, MOMENTUM DAN IMPULS PADA PEMBELAJARAN FISIKA SMA KELAS X Ahmad Dedi Putra; Murtiani Murtiani; Gusnedi Gusnedi
PILLAR OF PHYSICS EDUCATION Vol 10 (2017)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.479 KB) | DOI: 10.24036/2552171074

Abstract

Learning resources used by educators in schools in the process of physics learning is still not capable of making learners become more active and independent in the learning process. Learning resources used were still in the form of regular print books and not interactive so that learning will be monotonous, learners less motivated and lazy to do the task given. The solution to this problem was to use an interactive module that has been designed. This research aimed to produce integrated interactive module guided inquiry using course lab application for business material, energy, momentum and impulse at Class X high school physics learning which is valid and practical. This research was a research development using R & D model Sugiyono. This model consiststed of 10 stages, but the research is only up to seven stages: knowing potentials and problems, gathering information, designing products, validating designs, revising designs, testing products, and revising products. Research subjects in this research are 3 validators to know the value of product validity, 2 educators, and learners in a class X SMA 6 Kerinci to know the practical value of the product. Data were analyzed by descriptive analysis technique. Based on the research which had been done, the product was produced in the form of interactive module. The research product was at very valid criterion with mean value 88,44% covering content validation aspect, presentation, graphical, and linguistic. The research product was at very practical criteria by educators with an average score of 90.77% which includes aspects of ease of use, efficiency of learning time, and benefits. The research product was also in very practical criteria by learners with an average value of 90.33% which includes aspects of ease of use of the menu, ease of use guidance, the use of multimedia, and motivation learners
FULL WAVEFORM INVERSION USING REVERSE TIME MIGRATION AND GOLDEN RATIO Aparajita, Made Jnanaparama; Pascaloa, M Rafif; Putra, Ahmad Dedi; Naufal, Harish Hartsa
JGE (Jurnal Geofisika Eksplorasi) Vol. 11 No. 3 (2025)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v11i3.502

Abstract

Seismic wave imaging techniques, such as conventional full-waveform inversion (FWI), which utilize numerical solutions of seismic wave equations, can be a valuable tool for estimating high resolution models of complex geological conditions. However, conventional FWI only uses one variable recording to find the minimum misfit in the step length calculation process, unlike the FWI golden ratio, which looks for minimum misfits using the four-variable recording. The method of calculating the four-variable recording continues to be updated until the velocity value from the FWI golden ratio is close to the actual velocity model values. Then, using reverse-time migration (RTM) in this case study is crucial for determining the final results of the velocity value in the FWI golden ratio. RTM takes over as the actual recording and is used in the process of calculating the gradient on this FWI golden ratio. The gradient is then calculated with a step length to get the model update. Using the golden ratio and gradient step length from RTM really helps reduce misfit. The final result, obtained using RTM and the golden ratio in the FWI method, produces an image that resembles the shape of the true synthetic model and yields updated velocity values that are not significantly different from the true velocity values in the synthetic model.
Co-Authors Aparajita, Made Jnanaparama Gusnedi Gusnedi Murtiani Murtiani Naufal, Harish Hartsa Pascaloa, M Rafif