Alfania, Alfania
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Penerapan Model Think Talk Write Berbasis Multimedia Terhadap Kemampuan Pemahaman Konsep Dan Komunikasi Matematis Alfania, Alfania
Jurnal Derivat: Jurnal Matematika dan Pendidikan Matematika Vol 6, No 2 (2019): Jurnal Derivat (Desember 2019)
Publisher : Pendidikan Matematika Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.725 KB) | DOI: 10.31316/j.derivat.v6i2.502

Abstract

AbstractTTW learning model assisted multimedia was applied to help students in developing their conceptual understanding and mathematical communication skills. This research was conducted to determine whether there was difference of effect between the application of TTW model assisted multimedia and peer tutoring model on the two mathematical skills. This research was a quantitative research with nonequivalent posttest-only control group design. The research population were the students of XI MIA at MAN 1 Pekalongan 2018/2019. The research sample was obtained by cluster sampling technique. The method used in collecting the data was a test. The data were analyzed by using the multivariate and univariate average difference test. The research results showed that (1) based on multivariate analysis, students’ conceptual understanding and mathematical communication skills that was taught by using TTW model assisted multimedia was different with students who were taught by using peer tutoring model; (2) based on univariate analysis, students’ conceptual understanding skills that was taught by using TTW model assisted multimedia was different with students who were taught by using peer tutoring model, and students’ mathematical communication skills that was taught by using TTW model assisted multimedia was different with students who were taught by using peer tutoring model. Keywords: TTW, Multimedia, Conceptual Understanding, Mathematical Communication
Peak Ground Acceleration (PGA) Analysis for Eathquake Risk Mitigation in IKN Area, Sepaku Sub-Distric, East Kalimantan Rahmania, Rahmania; Alfania, Alfania; Sastrawan, Febrian Dedi; Arisalwadi, Meidi
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 9 No 02 (2024): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v9i02.591

Abstract

This study examines the distribution of Peak Ground Acceleration (PGA) in the Ibu Kota Nusantara (IKN) development area, Sepaku Sub-District, East Kalimantan, an area with relatively low seismic activity compared to other parts of Indonesia. However, earthquake risks remain a concern due to the planned relocation of Indonesia's capital. Using the Kanai approach and seismic data from microtremor measurements and two significant earthquakes (Paser Regency, 2022, and Palu, 2018), PGA values ranged from 0.69 gal to 34.29 gal. The results show that the 4.5 magnitude Paser earthquake produced PGA values between 0.69 and 3.17 gal (average 1.8 gal), placing most areas in the low-risk zone. In contrast, the distant 7.2 magnitude Palu earthquake generated PGA values between 2.9 and 34.29 gal (average 15.6 gal), placing several areas in the moderate-risk zone. These findings underscore the significant impact of earthquake magnitude on PGA, with larger, more distant earthquakes causing stronger ground shaking. In conclusion, despite East Kalimantan's low local seismic activity, the study highlights the vulnerability of the IKN area to strong ground shaking from distant, high-magnitude earthquakes. This underscores the need for continued monitoring and preparedness, with tailored earthquake risk mitigation strategies, including reinforced construction standards and geotechnical assessments, to ensure the region's resilience to both local and distant seismic events. These insights are crucial for integrating seismic resilience into IKN's urban planning and the sustainable development of Indonesia's new capital city.