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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Materi dan Pembelajaran Fisika
Raharjo, Dwi Teguh
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Astronomy Education Energy Materials Science & Nanotechnology Physics

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Sistem Pengukuran Detak Jantung Janin Melalui Elektrokardiogram Abdominal dan Android Aji, Yusuf Anggara; Nuryani, Nuryani; Wiyono, Nanang; Yunianto, Mohtar; Purnama, Budi; Utari, Utari; Riyatun, Riyatun; Suharno, Suharno; Raharjo, Dwi Teguh
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 2 (2022): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i2.65287

Abstract

An android-based fetal heart rate measurement is presented in this article. The fetal heart rate was obtained from the mother's abdominal electrocardiogram which was then measured and processed by Raspberry pi using k-means. Raspberry pi processed results produce ECG signals and fetal heart rate which was displayed on Android devices in real-time. The android application can also save heart rate and ECG data or retrieve previously taken heart rate recordings. The system obtained that the average value of accuracy, sensitivity and predictive positive were 90.49%, 97.10% and 93.03%, respectively. The variation of the training time of the algorithm showed that the training time of 10 and 15 seconds mostly has better performance than the training time of 5 seconds.
Implementasi Flipped Classroom di SMA Al Muayyad Surakarta Pada Pembelajaran Fisika Gerak Harmonik Sederhana Ridho, Malik Rosyid; Raharjo, Dwi Teguh; Supurwoko, Supurwoko
Jurnal Materi dan Pembelajaran Fisika Vol 13, No 2 (2023): Jurnal Materi dan Pembelajaran Fisika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jmpf.v13i2.63696

Abstract

The  Classroom Action Research conducted at Al Muayyad High School to improve students' cognitive abilities in terms of student activeness by using a flipped classroom learning model.  The subjects of this research are 30 students. Data collection techniques are carried out using cognitive test instruments, observation sheets, and interviews both online and offline. The student activeness studied consists of 5 aspects, namely Visual, Oral, Listening, Writing and Mental. Student activeness data was collected using observation instruments and student cognitive ability data was collected using cognitive test instruments. The action was carried out in 2 cycles, each cycle consisting of planning, action, observation and reflection stages. Aspects of student visual activeness in the pre-cycle amounted to 25%; cycle I amounted to 66%; cycle II amounted to 88%. The aspect of students' oral activeness at pre-cycle was 38%; cycle I was 48%; cycle II was 64%. The aspect of student listening activity in the pre-cycle was 60%; cycle I was 70%; cycle II was 88%. The aspect of student writing activity in the pre-cycle was 45%; cycle I was 61%; cycle II was 80%. The aspect of students' mental activeness in the pre-cycle was 35%; cycle I was 67%; cycle II was 86%. While the results of students' cognitive abilities that were completed at the pre-cycle were 3%; cycle I was 14%; cycle II was 90%. Learning with a flipped classroom can improve students' cognitive abilities in terms of the activeness of class X students of SMA Al Muayyad Surakarta.
Co-Authors Aji, Yusuf Anggara Budi Purnama Mohtar Yunianto, Mohtar Nanang Wiyono Nuryani Nuryani Ridho, Malik Rosyid Riyatun, Riyatun Suharno Suharno Supurwoko Utari Utari