Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal WAPFI (Wahana Pendidikan Fisika) Journal of Physics: Theories and Applications Physics Education Research Journal
Khumaedi Khumaedi
Universitas Negeri Semarang
Education Materials Science & Nanotechnology Physics Social Sciences Other

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Soil Vulnerability Levels based on Microtremor Data using the HVSR method in the Old City Area of Semarang Supriyadi Supriyadi; Wahyu Humam Muttaqin; Khumaedi Khumaedi; Sugiyanto Sugiyanto
Journal of Physics: Theories and Applications Vol 6, No 1 (2022): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v6i1.59119

Abstract

Kota Lama Semarang with the Dutch colonial era relics is currently used as a cultural heritage tourist spot. As a cultural heritage tourism place, it is necessarily aware of the potential for earthquake disasters due to active faults and volcanic eruptions, as well as the phenomenon of land subsidence caused by geological conditions of young alluvium. One of the geophysical techniques to determine subsurface structure is microtremor measurement. This study aims to determine vulnerability level based on dominant frequency, amplification, and seismic vulnerability index using HVSR analysis in Kota Lama area. Microtremor data measurement contained 11 points with a data retrieval duration of 30 minutes. The results of microtremor data analysis obtained dominant frequency values of 7.03 - 19.36 Hz, amplification of 0.72 – 3.7, and seismic vulnerability index of 0.074 – 0.95. Based on the parameters, it can be concluded that the Kota Lama Semarang area has a low level of vulnerability.
Pemisahan Anomali Regional dan Residual Data Gayaberat Studi Kasus di Kota Lama Semarang Supriyadi Supriyadi; Khumaedi Khumaedi; Sugiyanto Sugiyanto; F Setiaswan
Physics Education Research Journal Vol 1, No 1 (2019)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2019.1.1.3927

Abstract

Research has been carried out using gravity methods to identify subsurface structures in the region of Kota Lama Semarang as a preliminary survey for disaster mitigation purposes. In processing gravity data to identify subsurface structures, several processing stages are carried out. The initial step is to make the initial correction in the form of tide correction and float correction then a further correction is performed until a complete Bouguer anomaly contour is obtained. From the complete Bouguer anomaly, regional and residual gravity anomalies can be separated. The separation of regional anomalies from Bouguer anomalies in this study uses the moving average method while residual anomalies are obtained by subtracting Bouguer anomalies from regional anomalies. In the study of identification of subsurface structures it is important to conduct regional and residual anomaly separations to interpret geological structures and obtain the targets sought. Regional anomaly values in the region of Kota Lama Semarang are between 28.0 mGal - 28.4 mGal while for residual anomalies have between 31.6 mGal - 32.8 mGal.
Analisis Literasi Sains Peserta Didik pada Mitigasi Bencana di Sekolah yang Dekat dengan Daerah Bencana dan Jauh dari Daerah Bencana Tanah Longsor di Kota Semarang Indah Suryaningrum; Budi Astuti; Ani Rusilowati; Khumaedi Khumaedi
WaPFi (Wahana Pendidikan Fisika) Vol 6, No 1 (2021): WaPFi (Wahana Pendidikan Fisika) Februari 2021
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.031 KB) | DOI: 10.17509/wapfi.v6i1.32462

Abstract

Tujuan artikel ini untuk menganalisis literasi sains peserta didik pada mitigasi bencana alam yang terjadi di Kota Semarang berdasarkan lokasi kejadian, yaitu dekat dengan bencana dan jauh dari bencana. Metode penelitian ini adalah mixed methods sequential explanatory dengan desain penelitian one shoot case study. Pengambilan sampel menggunakan teknik purposive sampling di SMAN 7 Semarang sebagai sekolah dekat daerah bencana (SMA A), dan SMAN 11 Semarang sebagai sekolah jauh dari daerah bencana (SMA B). Pengumpulan data dilakukan menggunakan instrument tes berbasis literasi sains, angket, serta wawancara terhadap beberapa peserta didik yang mewakili kriteria aspek kognitif. Berdasarkan analisis data, ditunjukkan tidak adanya perbedaan literasi sains peserta didik yang berada dekat dan jauh dari lokasi bencana alam. Hal tersebut dilihat dari persentase rata-rata tiap aspek literasi sains SMA A dan SMA B yang termasuk kriteria kurang sekali. Dengan demikian dapat disimpulkan bahwa jarak sekolah dengan lokasi bencana tidak memengaruhi literasi sains peserta didik. Kata kunci: literasi sains, mitigasi bencana, tanah longsor  ABSTRACT The purpose of this article is to analyze students' science literacy in mitigating natural disasters that occur in Semarang city based on the location of the incident, which is close to the disaster and far from the disaster. This research method is a mixed methods sequential explanatory with a one shoot case study research design. Sampling using purposive sampling technique at SMAN 7 Semarang as a school near the disaster area (SMA A), and SMAN 11 Semarang as a school far from the disaster area (SMA B). The data was collected using a science literacy-based test instrument, a questionnaire, and interviews with several students who represent the criteria for cognitive aspects. Based on data analysis, it was shown that there were no differences in science literacy of students who were near and far from the location of natural disasters. This can be seen from the average percentage of each aspect of science literacy in SMA A and SMA B which is categorized as very poor. Thus, it can be concluded that the distance between the school and the disaster location does not affect students' science literacy. Keywords: disaster mitigation, landslide, science literacy
Co-Authors Ani Rusilowati Budi Astuti F Setiaswan Indah Suryaningrum Sugiyanto - Supriyadi Supriyadi Wahyu Humam Muttaqin