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All Journal JFA (Jurnal Fisika dan Aplikasinya) Darmabakti Cendekia: Journal of Community Service and Engagements Jurnal Abdi: Media Pengabdian Kepada Masyarakat Indonesian Applied Physics Letters
Pujiyanto Pujiyanto
Departemen Fisika, Universitas Airlangga - Indonesia
Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Desain Sistem Klasifikasi Kelainan Jantung menggunakan Learning Vector Quantization Endah Purwanti; Franky Chandra Satria Arisgraha; Pujiyanto Pujiyanto; Muhammad Arief Bustomi
Jurnal Fisika dan Aplikasinya Vol 9, No 2 (2013)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (345.44 KB) | DOI: 10.12962/j24604682.v9i2.841

Abstract

Electrocardiograph (ECG atau EKG) merupakan alat diagnosis yang mengukur dan merekam aktifitas listrik jantung. Analisis sinyal EKG sering digunakan untuk mendiagnosis beberapa jenis kelainan jantung. Pada penelitian ini, kami merancang sistem jaringan syaraf tiruan untuk klasifikasi citra elektrikardiogram. Metode pemrosesan citra digunakan untuk ekstraksi fitur citra EKG dan proses klasifikasi menggunakan learning vector quantization. Beberapa data elektrokardiogram digunakan sebagai data pelatihan dan pengujian jaringan klasifikasi. Tiga jenis kelainan jantung dapat dideteksi oleh sistem. Hasil simulasi menunjukkan bahwa akurasi algoritma klasifikasi adalah sebesar 89% yang terdiri dari 9 normal, 4 bradikardi, 8 takikardi dan 7 aritmia.
Sodium Sulfate (Na2SO4) Detection Using Graphene Coated Microfiber M Yasin; Pujiyanto Pujiyanto; D Anngita; I A Fanany
Indonesian Applied Physics Letters Vol. 1 No. 1 (2020): June
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/iapl.v1i1.21336

Abstract

We investigate the coating of graphene onto the silica microfiber sensor for sodium sulfate measurement at room temperature. The graphene obtained from graphene-polylactic acid filament was coated onto the microfiber based on drop casting methods. In this work, the graphene acts as cladding to interact with analyte as well as functions to trap either sodium cation or sulfate anion and increases the effective refractive index of the cladding. The sensor has  a good sensitivity of 0.82 dBm/% and resolution of 1.16 %. The sensitivity and resolution of the sensor were increased by the coating of graphene layer. 
Prototype Development of Myoelectrics Signal-Based Exoskeleton Anggrian Riska Amelia Shabrine; Pujiyanto Pujiyanto; Akif Rahmatillah
Indonesian Applied Physics Letters Vol. 2 No. 1 (2021): June
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/iapl.v2i1.28296

Abstract

Diffable is incompleteness or abnormality accompanied by consequences for specific functions. The method used is tapping on the hamstring and hamstring muscles quadriceps to determine the resulting voltage—muscle signal tapping using Electromyograph (EMG) and Ag-AgCl electrodes. Average current-voltage contraction and relaxation are used as threshold values to drive the servo motor. This study indicates the tension when the muscle contracts are in the range of 4 volts while the relaxation time is 0.4 volts. Then it can be concluded that the voltage when the muscle is contracted is more significant than when it is relaxed. Using different tension during contraction and relaxation in normal subjects showed that the different tension could drive the prototype exoskeleton.
WORKSHOP FOR THE UTILIZATION OF LASER AND TECHNOLOGY 4.0 TO USE THE FUNCTIONS OF THE PHYSICS LABORATORY FOR SMA, MA, AND SMK TEACHERS IN GRESIK DISTRICT Retna Apsari; Moh Yasin; Samian; Herri Trilaksana; Supadi Supadi; Pujiyanto Pujiyanto
Darmabakti Cendekia: Journal of Community Service and Engagements Vol. 4 No. 2 (2022): DECEMBER 2022
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/dc.V4.I2.2022.87-95

Abstract

Background: Almost all of the development and research actors in the field of optical physics come from universities. Meanwhile, at the SMA, MA and SMK levels, this field is very poorly understood. This is due to the limited knowledge of optical physics and its supporting technology owned by the teachers. Objective: With this continuous and continuous training, it is hoped that it can provide new insights about understanding lasers and their use for technology 4.0 and can utilize laboratories in schools at the SMA, MA and SMK levels. Method: In practice, this activity was carried out virtually via Zoom which was attended by teachers at the SMA, MA and SMK levels, and was filled by several Physics lecturers at Airlangga University in delivering material in the form of lasers, laser diffraction, and 3D printing technology. Results: Partners get information related to increasing knowledge of the use of lasers and diffraction phenomena that can be conveyed and demonstrated to students, as well as the use of 3D printing technology so that teachers can convey and increase students' interest in learning Physics. Conclusion: Physics teachers at the SMA, MA and SMK levels, especially in Gresik Regency, feel quite helped by this activity because it has provided updated knowledge and information related to understanding and mastering the basic principles and applications of using lasers with a very satisfied level of satisfaction of about 47.73%, a satisfied category of about 45.27%, and the remaining 7% choosing to be less satisfied.
WORKSHOP PEMANFAATAN LASER DAN TEKNOLOGI 4.0 UNTUK MENDAYAGUNAKAN FUNGSI LABORATORIUM FISIKA BAGI GURU SMK DAN SMA DI KABUPATEN JEMBER Retna Apsari; Moh. Yasin; Samian; supadi; Herri Trilaksana; Pujiyanto
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2022): Vol.8, No.1(2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/abdi.v8i1.12467

Abstract

Revolusi Industri 4.0 sudah di depan mata. Dengan adanya pandemi COVID 19 kita dipaksa untuk mengaplikasikan teknologi 4.0, suka maupun tidak suka. Kita semua harus segera merubah paradigma. Selama ini siswa siswi SMK dan SMA di Indonesia, termasuk Kabupaten Jember pada khususnya, kurang menyukai pembelajaran fisika apalagi praktikumnya di laboratorium. Metode pembelajaran yang kurang interaktif dan kurang membuminya aplikasi yang dipilih membuat fisika jauh dari hati anak didik dan guru-gurunya. Dengan adanya pandemi COVID 19, ilmu fisika dan aplikasinya mulai dilirik oleh seluruh kalangan. Bagaimana sinar UV dapat mematikan bakteri dan virus, bagaimana sinar UV dapat digunakan sebagai sterilisasi bakteri, bagaimana pengaturan waktu berjemur yang efektif dan efisien sehingga COVID 19 dapat matikan, bagaimana IOT dapat digunakan sebagai media pembelajaran yang optimal, dan bagaimana teknologi 4.0 dipakai sebagai supporting utama dalam segala aspek proses kehidupan. Tujuan utama pengmas ini memberikan delivery materi praktikum dan materi hasil penelitian dosen dalam bidang aplikasi laser dan teknologi 4.0 di level perguruan tinggi yang dapat dimanfaatkan maksimal oleh guru-guru SMK dan SMA. Diharapkan materi yang disampaikan dapat didistribusikan ke anak-anak didik di bangku SMK dan SMA, sehingga akan muncul generasi-generasi hebat dari Kabupaten Jember. Harapannya potensi lokal Jember dapat hadir dan menghiasi produk-produk nasional dan internasional terutama produk-produk yang terkait dengan sterilisasi air minum, sterilisasi ikan hasil nelayan dengan menggunakan teknologi yang akan disampaikan pada pengmas ini. Teknologi yang akan disampaikan pada workshop ini adalah Laser UV dan Laser merah, difraksi laser, mekanisme interaksi laser terhadap jaringan, spektrofotometer, dan sensor fiber optic untuk aplikasi kesehatan dan ketahanan pangan.
Co-Authors Anggrian Riska Amelia Shabrine D Anngita Endah Purwanti Franky Chandra Satria Arisgraha Herri Trilaksana I A Fanany M Yasin M. Arief Bustomi Moh Yasin Rahmatillah, Akif Retna Apsari Samian Supadi Supadi