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All Journal Jurnal MIPA Natural B Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto)
Didik R. Santoso
Jurusan Fisika Fakultas MIPA Universitas Brawijaya Malang
Biochemistry, Genetics & Molecular Biology Chemistry Engineering Environmental Science Mathematics Physics

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OPTIMASI PENENTUAN STATUS AKTIVITAS GUNUNG MERAPI MENGGUNAKAN METODE HYBRID ANFIS DAN PARTICLE SWARM OPTIMIZATION (PSO) Fatkhurrozi, Bagus; Muslim, M. Aziz; Santoso, Didik R.
Techno Jurnal Ilmu Teknik Vol 15, No 2 (2014): Jurnal Techno Volume 15 No.2 Oktober 2014
Publisher : UMP

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Abstract

Tujuan penelitian ini adalah membuat model penentuan status aktivitas Gunung Merapi menggunakan metode hybrid ANFIS dan Particle Swarm Optimization (PSO). Data yang digunakan adalah data sekunder hasil pemantauan dari aktivitas kegempaan, deformasi tanah, dan geokimia Gunung Merapi. Data pelatihan menggunakan periode data prekursor erupsi Gunung Merapi tahun 1997, 1998, 2001, dan 2006. Data pengujian menggunakan data prekursor erupsi Gunung Merapi tahun 2010. Dari proses penelitian diperoleh hasil yaitu pada proses pelatihan, RMSE hybrid ANFIS-PSO sebesar 0,0877 dan MAPE pelatihan ANFIS-PSO sebesar 16,2518%. Pada proses pengujian, metode hybrid ANFIS-PSO dapat memperbaiki MAPE hasil pengujian ANFIS yang sebesar 10,2041% menjadi 8,3333%. Kata kunci : status aktivitas, Gunung Merapi, ANFIS, PSO
Influence of Rice Seed Replanting Growth (Oryza sativa L.) Inpari-4 Varieties with Giving Frequency of Sound Waves Bahtiar, Bahtiar; Widodo, Chomsin S.; Santoso, Didik R.
Natural B, Journal of Health and Environmental Sciences Vol 3, No 1 (2015)
Publisher : Natural B, Journal of Health and Environmental Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (332.459 KB) | DOI: 10.21776/ub.natural-b.2015.003.01.7

Abstract

Has done research that aims to examine the influence of sound wave frequency of rice seeds of the shoots phase. Rice seeds Inpari-4 varieties planted at four growing medium in the sterofoam box with the treatment of the different frequncies of 10 Hz, 4 kHz, 7 kHz, 30 kHz and one growing medium without sound treatment which serves as the control plants.  The test parameters were often observed as an indicator of plant, a lot of leaves, wet and dry weight of roots, root lenght, moisture content and test unison is growing. The result showed that there is a sound wave frequency value responded well by rice seed shoots in the process so that its growth into the optimal frequency of 4 kHz. 
Pengembangan Array sensor Suhu dan Sistem Akusisi Data Berbasis Mikrokontroler untuk Pengukuran Suhu Bawah Permukaan Suoth, Verna Albert; Santoso, Didik R.; Maryanto, Sukir
Jurnal MIPA Vol 2, No 1 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.2.1.2013.1038

Abstract

Dalam penelitian ini dikembangkan sebuah sistem akusisi data untuk survei panas bumi. Untuk menghasilkan sistem instrumentasi yang mampu mengukur dan memonitor distribusi suhu bawah permukaan diperlukan sistem akusisi data yang murah dan efesien. Sistem dibangun berbasis jaringan sistem terdistribusi dengan topologi field-bus, menggunakan arsitektur single-master multi-slave. Master merupakan unit pengendali, dibangun berbasiskan sebuah PC yang dilengkapi dengan antarmuka RS-485. Slave merupakan unit sensing, tiap-tiap unit slave dibangun dengan mengintegrasikan sistem array sensor LM35 dengan sistem akuisisi data berbasis mikrokontroler menggunakan AVR ATmega8. Pengolahan data dari hasil pengukuran suhu ini menggunakan satu set komputer dengan perangkat lunak microsoft excel 2010 untuk menghasilkan grafik pada titik pengukuran. Hasil implementasi dari monitoring suhu ini akan mengambarkan distribusi suhu bawah permukaan tanah.A data acquisition system for geothermal survey was developed in this research. Cheap and efficient data acquisition system was required to produce the instrumentation system which was capable to measure and monitor the distribution of subsurface temperature. The system consists of field-bus topology, using single-master multi-slave architecture. Master is a control unit built based on a PC equipped with RS-485 interface. Slave is a sensing unit; each slave is built by integrating array sensor LM35 within AVR ATmega8a microcontroller-based data acquisition system. Measurement techniques included sounding and mapping system by placing four slaves planted in the depth of 2.5 m. Processing of data obtained from temperature measurements was performed using Microsoft Excel 2010 to produce graphics at point of measurement. The results of temperature monitoring will described the distribution of subsurface temperature.
Co-Authors Bagus Fatkhurrozi Bahtiar Bahtiar Chomsin S. Widodo Muhammad Aziz Muslim Sukir Maryanto Verna Albert Suoth