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All Journal International Journal of Electrical and Computer Engineering Indonesian Journal of Geography Jurnal Ilmu Dasar POSITRON Jurnal Sains Materi Indonesia Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) JOURNAL AGRIBUSINESS Jurnal VOK@SINDO Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences JFA (Jurnal Fisika dan Aplikasinya) Jurnal Spektra JOURNAL ONLINE OF PHYSICS Science and Technology Indonesia JOIV : International Journal on Informatics Visualization Journal of Science and Applicative Technology Neutrino Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Ilmu Fisika JURNAL METEOROLOGI DAN GEOFISIKA Jurnal Review Pendidikan dan Pengajaran (JRPP) Risalah Fisika Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Sainstek : Jurnal Sains dan Teknologi Community Development Journal: Jurnal Pengabdian Masyarakat Pillar of Physics: Jurnal Berkala Ilmiah Fisika PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Indonesian Journal of Physics (IJP) Newton-Maxwell Journal of Physics Journal of Engineering and Technological Sciences
Mitra Djamal
Institut Teknologi Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : Journal of Mathematical and Fundamental Sciences

 1 
Pengukuran Medan Magnet Lemah Menggunakan Sensor Magnetik Fluxgate dengan Satu Koil Pick-Up Mitra Djamal; Rahmondia Nanda Setiadi
Journal of Mathematical and Fundamental Sciences Vol. 38 No. 2 (2006)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.sci.2006.38.2.2

Abstract

A magnetic sensor has been developed for measuring a very low magnetic field. The sensor consists of two primary coils (excitation coil) and one secondary coil (pick-up coil). Primary coil that wound at ferromagnetic core is made symmetry each other. Whereas secondary coil is wound to both of cores. Primary coil drives the core until it saturated. The generated magnetic field from excitation have the contrary direction, so if there is no external magnetic field, the magnetic field inside the secondary coil is symmetry, but if there is an external magnetic field, there will be magnetic field changes inside secondary coil. These changes will induce secondary coil, as a consequence, there will be an induction voltage that acts as signal at the ends of secondary coil. The signal is then differentiated, amplified, inserted to controlled rectifier, integrated, and amplified for the last time. From measurement results, it can be obtained that magnetic sensor can measure magnetic field in the range of measurement from -40 μT to 40 μT, with sensitivity about 346.47 mV/μT and relative error less than 4%.
The Reliability of Wireless Sensor Network on Pipeline Monitoring System Hafizh Prihtiadi; Mitra Djamal
Journal of Mathematical and Fundamental Sciences Vol. 49 No. 1 (2017)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2017.49.1.5

Abstract

The wireless sensor network (WSN) is an attractive technology, which combines embedded systems and communication networks making them more efficient and effective. Currently, WSNs have been developed for various monitoring applications. In this research, a wireless mesh network for a pipeline monitoring system was designed and developed. Sensor nodes were placed at each branch in the pipe system. Some router fails were simulated and the response of each node in the network was evaluated. Three different scenarios were examined to test the data transmission performance. The results proved that the wireless mesh network was reliable and robust. The system is able to perform link reconfiguration, automatic routing and safe data transmission from the beginning node to the end node.
Multi-wavelength Fibril Dynamics and Oscillations above Sunspot-II Wave Propagation Signature Emanuel Sungging Mumpuni; Dhani Herdiwijaya; Mitra Djamal; Thomas Djamaluddin
Journal of Mathematical and Fundamental Sciences Vol. 50 No. 3 (2018)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2018.50.3.4

Abstract

In this work, the dynamics of one particular fibril were investigated through high-resolution multi-wavelength images with high cadence obtained from the Dutch Open Telescope. Based on exceptional observation data of Active Region 10789, 13th July 2005, we investigated the alternating fibril pattern using tomography of the multi-wavelength band, consisting of the hydrogen alpha line center and also the blue wing, the calcium II H line, and the G-band. Phase difference and coherence analyses were conducted for several points along the fibril and (k, ω) analysis was conducted to understand the wave interaction and its mechanism in the propagation process. Our findings suggest short- to long-period transitions along the fibril with coherence in 10-min oscillations in the penumbra.
Co-Authors Abdul Muid Abdul Muid Abdul Waris Abi Hanafi, Aliif Fahrur Achmad, Fariz Aditya Alviori Adrian, Kristofer Ahmad Aminudin Akbar, Reyhan Nugraha Alam Purnama, Atra Ardiyanto Alamta Singarimbun Albab, Alfi Nur Almazari, Abar Ambran Hartono Aminah, Nina Siti Appriyana, Nazira Ari Setiawan Ashadi Amir Azizah Ghina Arifah Bergita Gela M. Saka Buchari Buchari Costrada, Aldo Novaznursyah Cut Novianti Rachmi, Cut Novianti Dadang Dadang Danang Trihatmoko, Danang Daniel Kurnia Daryono Hadi Tjahyono Dasapta Erwin Irawan, Dasapta Erwin Deddy Kurniadi Deny Juanda Puradimaja Dhani Herdiwijaya Dhani Herdiwijaya Emanuel Sungging Mumpuni Evita, Maria Faradyba, Anggi Fatahah Dwi Ridhani Fitrilawati Fitrilawati Freddy Haryanto H Mahfudz Hafizh Prihtiadi Harapan Marpaung Harmadi Harmadi Hendro Hendro Hendro Hendro Hendro Hendro Herlan Darmawan Herman Bahar Hong Joo Kim Hufri Hufri Husein H I Kadek Agus Sara Sawita I Made Astra Iful Amri Imam Suyanto Imam Taufiq Indah Permatasari Inggi Dwi Putri Irninthya Nanda Pratami Irwan irwan meilano Irzaman, Irzaman Ismail Rizka Pambudi Ivan Limansyah Jakrapong Kaewkhao Jayawarsa, A.A. Ketut Juneman Abraham Juniastel Rajagukguk Juniastel. R Kane, Hansel Khairurrijal Khairurrijal Kim, Hong Joo Kumalasari, Ratih Lia Yuliantini Lia Yuliantini Linus Pasasa M. Barmawi Maman Budiman Maman Budiman Maria Evita Maria Evita Maria Evita Martin Liess Martin Liess Melany Febrina Moch Tanzil Multazam Moh Yasin Muhammad Kamal Mukhlizar, Mukhlizar Mukti, Rino Rakhmata Mulyaningsih, Indrya Murhaban Mustikawati, Sekar Tanjung Ni Ketut Lasmia Nina Aminah Nina Siti Aminah Nur Ismirawati, Nur Prihatini, Jihan Putra, Adiyasa Pratama Putra, Heriansyah R. N. Setiadi Rahmat Hidayat Rahmat Hidayat Rahmondia N. S Rahmondia N. Setiadi Rahmondia Nanda Ramadan, Hafiz Arshad Ramdhani, Adrian Pandjie Ramli Ramli Ramli Ramli Rausyanfikr, Fadhil Retna Apsari Riko Rakhmat Sanjaya, Yogie Sara Sawita, I Kadek Agus Sari, Mona Berlian Sari, Mona Berlian Satria, Eko Sawita, Agus Sara Sawita, I Kadek Agus Sara Siti Aminah, Nina Sony Wardoyo Sparisoma Viridi Suparno Satira Suprijadi Suprijadi Suprijadi Suprijadi Suprijadi Suprijadi Suryanto, Wiwit Suyatno Suyatno Suyatno, Suyatno Tarigan, Darell Timothy Thomas Djamaluddin Togar Saragi Tri Siswandi Syahputra Umiatin, Umiatin Wahyu Srigutomo Wahyudi Wahyudi Widyaningrum Indrasari Wilson Jefriyanto Wirawan Wirawan Wirawan, Rahadi Yudi Nugraha Yuliantini, Lia Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yusaku Fujii Zaki Suud Zannuraini Zannuraini Zul Anwar