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Relocation Of Earthquake Hypocenter In The Flores Region Using Hypo71 Regolinda Maneno; Bagus Jaya Santosa; Gazali Rachman
IPTEK The Journal of Engineering Vol. 5 No. 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v5i2.a5024

Abstract

Flores is one of the seismically high activity zones of Indonesia region as a consequence of Indo-Australian plate subduction under the Eurasian plate. Tectonic earthquakes required to be studied because in large magnitude it can bring disaster. Therefore the precise of hypocenter determination needs to be done. In this study, hypocenter relocation is done by Single Event Determination method using hypo71. The data used are earthquake event data in Flores area which has magnitude > 4 SR at period between January 2010 and March 2018 obtained from BMKG catalog. Hypo71 requires data of arrival time of P and S waves at the recorder station. The arrival time of P and S waves data at each station is obtained by picking P and S waves using SeisGram2k70. The results showed that the source of the earthquake experienced a change of position both horizontally and vertically. In the vertical direction of hypocenter earthquake changes in the distance between 0.02 - 89.61 km, while in the horizontal direction the hypocenter of the earthquake changes in the distance of 1.11 - 71.11 km. After relocation, the hypocenter of the earthquake distributed along the Back Arc Trust in the northern island of Flores. Hypocenter relocation using hypo71 yields a small residual between the observation time and calculation time denoted by RMS <1.
Strengthening Teachers’ Competence in Developing Diagnostics Tests for Learning Erlin Eveline; Herman S. Wattimena; Heppy Sapulate; John Rafafy Batlolona; Gazali Rachman; David Tuhurima; Cicylia Triratna Kereh; Marasi Bless Suryan; Anastasija Limba; Juliana Nirahua
Unram Journal of Community Service Vol. 6 No. 4 (2025): December
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v6i4.1222

Abstract

The purpose of this community service is to strengthening teachers’ competence about diagnostics test for deep learning approach. The community service is conducted to address the challenges of Indonesia’s new curriculum policy about deep learning based on meaningful learning. The implementation methods include opening, materials explanation, discussion, assessment, and closing. Assessment was conducted by questionnaire and test. The result of the assessment from the questionnaire shows positive responses from teachers.  The average scores each statement ranges from 82% to 97%. It indicates a high level of participant satisfaction with the community service. The teachers gained strengthened knowledge about deep learning and the development of diagnostic instruments. The results indicate that the teachers found this community service beneficial, relevant to classroom needs, and applicable in teaching. In addition, most teachers were aware of diagnostic instruments (61,1%), but only a few teachers had ever developed them (5.6%) or conducted them in their classroom (11.1%). It shows that the implementation of the diagnostics test is still limited before conducting the training.  The result of the assessment from the test shows the mean score obtained by the teachers was 86,67. A total of 16 out of 18 teachers (88,9%) scored  80, which is categorized as good, while 2 teachers scored below 80. Thus, the percentage of teachers exceeded the predetermined achievement indicator of 70%. It is hope that this activity can help teachers in supporting deep learning approach at classroom.