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All Journal PROSIDING SEMINAR NASIONAL Berkala Fisika Indonesia : Jurnal Ilmiah Fisika, Pembelajaran dan Aplikasinya TARBIYA : Journal Education in Muslim Society Jurnal Pendidikan Fisika FKIP UM Metro Phi : Jurnal Pendidikan Fisika dan Terapan Jurnal Fisika Unand JFA (Jurnal Fisika dan Aplikasinya) Edufisika: Jurnal Pendidikan Fisika JOURNAL ONLINE OF PHYSICS Jurnal Penelitian Pembelajaran Fisika Journal of ICSAR Journal of Geoscience, Engineering, Environment, and Technology International Journal of Science and Applied Science: Conference Series Jurnal Pendidikan Informatika dan Sains JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) JIPF (Jurnal Ilmu Pendidikan Fisika) Journal of Physics: Theories and Applications Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Spektra: Jurnal Fisika dan Aplikasinya SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Journal of Physics and Its Applications Jurnal Pendidikan Fisika dan Teknologi Jurnal Kumparan Fisika Buletin Ilmiah Sarjana Teknik Elektro Indonesian Review of Physics (IRiP) Jurnal Fisika Indonesia Indonesian Journal of Electrical Engineering and Computer Science Navigation Physics : Journal of Physics Education Jurnal Penelitian Sains dan Pendidikan (JPSP) Prosiding Seminar Nasional Program Pengabdian Masyarakat Jurnal Materi dan Pembelajaran Fisika PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Engineering Science Letter Journal of Novel Engineering Science and Technology Bincang Sains dan Teknologi JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Yudhiakto Pramudya
Universitas Ahmad Dahlan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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The Content Analysis of Bisphenol A (BPA) on Water in Plastic Glass with Varying Temperatures and Contact Times using UV-VIS Spectrophotometer Bayu Nugroho; Yudhiakto Pramudya; Widodo Widodo
Indonesian Review of Physics (IRiP) Vol. 1 No. 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v1i2.263

Abstract

This study aims to analyze the content of Bisphenol A (BPA) on various temperatureandcontact timesbetween the plastic bag and water. For analysis of BPA, a sample made with variations of temperature (± 70°C, ± 80°C, ± 90°C) and contacttime(5 minutes, 10 minutes, 15 minutes) usingnine samples. To determine the concentration of BPA, Lambert-Beer law was employed.According to the analysis of data, the content of BPA on the temperature variation showed that the higher the temperature of the sample, the higher the content of Bisphenol A in the sample. The content of BPA with a variation of contact times stated that with the longer contact time, the higher the content of BPA.
An Experiment Design for Determining the Volume of Traditional Eucalyptus Oil with Variations in Fluid Flow Speed Nur Hamida Siregar; Moh. Toifur; Yudhiakto Pramudya
Indonesian Review of Physics (IRiP) Vol. 2 No. 1 (2019)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v2i1.909

Abstract

This study aimed to determine the volume of traditional eucalyptus oil from distillation with variations in fluid flow velocity. The method of distillation was distillation with water (water distillation). The material was eucalyptus leaves. To determine the volume of eucalyptus oil produced by distillation, the distillation device was set at the height of the condenser to the source of flow fluid, which was at an altitude of 15 cm, 25 cm, 35 cm, 45 cm, and 55 cm. Variation in the height of the condenser would affect the fluid flow rate. The faster the fluid flow rate, the greater the convection coefficient so that it increased the heat transfer rate. This results in greater volume (capacity) of oil produced. From these experimental results, most volumes of eucalyptus oil obtained from the distillation was obtained at 55 cm of the height of condenser with 3.6 mLof oil volume.
Development of Interactive Physics E-Module Using the SETS (Science, Environment, Technology, Society) Approach to Improve Science Literacy Dimension of Content and Process Dimensions in Fluid Dynamics Material Eka Syafutri; Widodo Widodo; Yudhiakto Pramudya
Indonesian Review of Physics (IRiP) Vol. 3 No. 1 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i1.1691

Abstract

This development research produces interactive physic electronic products using the interactive physics SETS approach (Science, Environment, Technology and Society) in terms of presenting the components of illustration, language, and the suitability of the material. The validity results of the electronic module carried by experts and teachers develeop the average yield of 96.36% so it is feasible to use. The study design is pretest-posttest control group to see the improvement of  literacy dimension process. Subject of the study consisted of two groups: the experimental group and the control group. The data collection formed by science literacy of dimension content and process is analyzed using MANOVA with significance level of 5%. The results showed that the electronic module using SETS approach significantly influence the improvement of science literacy dimension content and process.
Aplikasi Sensor Smartphone dalam Eksperimen Penentuan Percepatan Gravitasi (Halaman 10 s.d. 13) Aan Suciarahmat; Yudhiakto Pramudya
Jurnal Fisika Indonesia Vol 19, No 55 (2015)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (534.219 KB) | DOI: 10.22146/jfi.24365

Abstract

Telah dilakukan penelitian untuk menentukan nilai percepatan gravitasi menggunakan aplikasi sensor Smartphone berbasis Android. Analisis matematis dilakukan menggunakan teknik rata-rata dari data yang terekam oleh aplikasi sensor Accelerometer.  Analisis data smartphone ini dibandingkan dengan data yang diperoleh dari video analisis program Logger Pro, dan untuk membantu perhitungan dilakukan analisis dengan pendekatan Regresi Linier. Dari hasil analisis data smartphone, diperoleh nilai percepatan gravitasi adalah (9,7245±0,005) m/s2.
Sistem Pelacak Otomatis Gerakan Benda Langit Pada Teleskop Refraktor Berbasis Mikrokontroler (Halaman 82 s.d. 85) M. Burhanuddin Latief; Muchlas -; Yudhiakto Pramudya
Jurnal Fisika Indonesia Vol 18, No 54 (2014)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1255.2 KB) | DOI: 10.22146/jfi.24378

Abstract

Banyak aktivitas menakjubkan yang terjadi pada benda-benda langit seperti bintang, matahari dan bulan setiap waktu, sehingga para astronom tertarik untuk melakukan penelitian  dengan cara melihatnya melalui teleskop. Saat ini teleskop yang tersedia sebagian besar hanya dapat melakukan pelacakan gerak bintang saja. Melalui penelitian ini, dirancang teleskop yang dapat melakukan pelacakan secara otomatis gerak matahari dan bulan. Sistem pelacak benda-benda langit pada penelitian ini dibangun dengan menggunakan motor stepper yang dikendalikan oleh mikrokontroler jenis ATMega32. Algoritma pengendaliannya menggunakan sistem kendali terbuka dengan basis waktu. Kinerja alat diuji dengan membandingkan hasil pengukuran pergeseran sudut setiap jam dari teleskop refraktor terhadap nilai teoritiknya untuk setiap benda langit yang diamati. Hasil penelitian menunjukkan bahwa sistem yang dibangun dapat melakukan pelacakan secara otomatis pergerakan benda-benda langit dengan akurat. Kelebihan dari sistem ini adalah menyediakan fasilitas setting sudut melalui tombol saklar yang disediakan tanpa melakukan program ulang. Selain itu, sistem ini menyediakan pula mode pelacakan gerak bulan secara otomatis, yang tidak tersedia pada teleskop refraktor yang lain.
The Study of Seeing Characteristic at the UAD Observatory on Procyon, Sirius, Spica, Nunki, Altair, and Vega using Celestron C6-N telescope Ricka Tanzilla; Yudhiakto Pramudya; M. Khairul Ardi; Okimustava Okimustava
Jurnal Fisika Indonesia Vol 25, No 1 (2021)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfi.v25i1.58087

Abstract

Astronomical observatories can be declared feasible if they have a good condition such as a dark sky, relatively little cloud coverage, relatively low light pollution, and small air turbulence or seeing. The UAD (Universitas Ahmad Dahlan) observatory was measuring the seeing characteristic to assess the feasibility condition. The DIMM method (Differential Image Motion Monitor) was utilized to get the measurement in April, May, and September 2019. The 150 mm diameter Celestron C6-N telescope was used as the instrument to get the star images. The characteristics of a good seeing value on April 10, 2019, are Procyon star with a value of 0.2 arc seconds, and on September 18, 2019, the Vega star with a value of 1.6 arc seconds. Analysis of the seeing characteristic at the UAD Observatory can be used as a reference for observers on star selection, and the operation of the telescope
PENGEMBANGAN SISTEM AKUISISI DATA KELEMBABAN DAN SUHU DENGAN MENGGUNAKAN SENSOR DHT11 DAN ARDUINO BERBASIS IOT Kabul Setiya Budi; Yudhiakto Pramudya
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.39 KB) | DOI: 10.21009/03.SNF2017.02.CIP.07

Abstract

Has been developed an acquisition system  data of humidity and temperature by using DHT11 censor and Arduino. Data which have been read by censor of DHT11 then processed by Arduino and then sent to a webserver that is thingspeak. To send data to the web server, used ESP8266 module’s to access wifi signal of portable hotspot. Data of censor of DHT11 then presented in thingspeak with graph form. Temperature data read by DHT11 compared to data read by censor of thermocouple vernier. And then calculated value of error reference that is 1,73%. Keywords: Temperature and Humidity, ESP8266, DHT11, Thingspeak
Studi pengaruh volume ruang bakar pada kinerja sepeda motor empat langkah sebagai aktivitas dalam project-based learning termodinamika di sekolah menengah kejuruan Budi Utama; Yudhiakto Pramudya; Abu Yazid Raisal
Berkala Fisika Indonesia : Jurnal Ilmiah Fisika, Pembelajaran dan Aplikasinya Vol 13, No 2 (2022)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/bfi-jifpa.v13i2.23173

Abstract

Termodinamika jarang diajarkan dengan kegiatan praktik. Penelitian dilakukan untuk menginvestigasi kinerja mesin kendaraan bermotor berkaitan dengan efisiensi penggunaan bahan bakar. Kinerja mesin dapat diajarkan dengan pendekatan Project Based Learning. Modifikasi volume ruang bakar pada kepala silinder dilakukan untuk mengubah kinerja mesin. Tekanan dan daya yang dimiliki oleh sebuah mesin kendaraan merupakan komponen utama pada kinerja mesin. Hasil analisis data pada modifikasi ruang bakar diperoleh diameter sebelum dimodifikasi 50 mm menjadi 54 mm, TMA dari 49,5 mm menjadi 54 mm, TMB dari 5,5 mm menjadi 3,5 mm, rasio kompresi dari 9 : 1 menjadi 15 : 1. Hal ini menyebabkan konsumsi bahan bakar dari 86,5 ml menjadi 89,5 ml pada putaran 6000 rpm, dari 62,33 ml menjadi 64,166 ml pada 4000 rpm, dari 48,166 ml menjadi 50 ml pada 2000. Modifikasi ini mengakibatkan kenaikan pada energi panas yang masuk ke sistem yaitu 0,1 kJ, efisiensi termal naik 0,1%, kerja bersih naik 0,4 kJ, dan tekanan efektif rata-rata naik sebesar 0,3 N/cm2.  Study of the Effect of Combustion Chamber Volume on Four-Step Motorcycle Performance as an Activity in Thermodynamics Project Based Learning in Vocational High Schools. Thermodynamics is rarely taught with practical activities. The research was conducted to investigate the performance of motorized vehicle engines related to fuel efficiency. Machine performance can be taught with a Project Based Learning approach. Modification of the volume of the combustion chamber on the cylinder head is done to change engine performance. The pressure and power possessed by a vehicle engine are the main components of engine performance. The results of data analysis on the modification of the combustion chamber obtained the diameter before being modified from 50 mm to 54 mm, TMA from 49.5 mm to 54 mm, TMB from 5.5 mm to 3.5 mm, compression ratio from 9: 1 to 15: 1. This causes fuel consumption from 86.5 ml to 89.5 ml at 6000 rpm, from 62.33 ml to 64.166 ml at 4000 rpm, from 48.166 ml to 50 ml at 2000. This modification increases energy. The heat entering the system is 0.1 kJ, the thermal efficiency increases by 0.1%, the net work increases by 0.4 kJ, and the average effective pressure increases by 0.3 N/cm2.
Development of Augmented Reality Media Based On Cybernetic Learning Theory to Stimulate Spatial Abilities Andriyani Andriyani; Joko Lianto Buliali; Yudhiakto Pramudya
Journal of ICSAR Vol 6, No 2 (2022): July
Publisher : Department of Special Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um005v6i22022p151

Abstract

Hearing impairment students have limited vocabulary and have difficulty understanding abstract terms, which affects learning the concept of a plane solid figure that they know at school. Deaf students tend to have difficulty perceiving objects from a certain point of view and understanding the relationship between these objects in a particular space. These difficulties affect students' spatial abilities and require special handling in the form of learning-oriented to the learning process, not learning outcomes. The learning process itself can be determined by information systems such as the basis of cybernetic theory and supported by information technology-based interactive learning media. Therefore, this study aims to develop augmented reality media based on cybernetic learning theory to stimulate valid and practical spatial abilities of deaf students. The research and development model carried out in this study is the Borg and Gall model, which has systematic and descriptive steps for practical problems in teaching through applied research. Researchers collected data through validation questionnaires and student response questionnaires. Data analysis was carried out qualitatively and quantitatively. The augmented reality media developed here can be said to meet the criteria of validity and practicality based on the results of the product feasibility test. This media has also proven to be a solution in helping teachers to stimulate the spatial abilities of deaf students through a meaningful learning process determined by a technology-assisted information system
Forecast earthquake precursor in the Flores Sea Adi Jufriansah; Ade Anggraini; Zulfakriza Zulfakriza; Azmi Khusnani; Yudhiakto Pramudya
Indonesian Journal of Electrical Engineering and Computer Science Vol 32, No 3: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v32.i3.pp1825-1836

Abstract

Artificial intelligence (AI) can use seismic training data to discover relationships between inputs and outcomes in real-world applications. Despite this, particularly when using geographical data, it has not been used to predict earthquakes in the Flores Sea. The algorithm will read the seismic data as a pattern of iterations throughout the operation. The output data is created by grouping based on clusters using the most effective WCSS analysis, while the input features are derived from the original international resource information system (IRIS) web service data. Given that earthquake prediction is an effort to reduce seismic disasters, this research is essential. By generating predictions, it can reduce the devastation caused by earthquakes. Using the support vector machine (SVM), hyperparameter support vector machine (HP-SVM), and particle swarm optimization support vector machine (PSO-SVM) algorithms, this study seeks to forecast the Flores Sea earthquake. According to the estimation results, the SVM algorithm’s evaluation value is less precise than that of the HP-SVM, especially the linear HP-SVM and HP-SVM Polynomial models. However, the HP-SVM RBF model’s accuracy rating is identical to that of the traditional SVM model. The improvement of the PSO-SVM model, which has the finest gamma position and a value of 9.
Co-Authors Aan Suciarahmat Abdul Muis Habib Abu Yazid Raisal Ade Anggraini Adi Jufriansah Afriyanto, Mulya Alip, Isma Andriyani Andriyani Anggraini, Ade Anisatur Rofiqah, Siti Arfiani Nur Khusna Azmi Khusnani Bayu Nugroho Bayu Nugroho Betty Mauli Rosa Bustam Budi Utama Buliali, Joko Lianto Deidra Robertha Anggraeny Noel Desi Susanti Deti, Maria Dina Rahmah Maulida, Dina Rahmah Donuata, Pujianti Bejahida Dwi Nova Siti Handayani Dwi Nova Siti Handayani Edwin Ariesto Umbu Malahina Eka Syafutri Feri Iskandar Firaina, Radha Habib, Abdul Muis Hamzarudin Hikmatiar Handayani, Dwi Nova Siti Hasbullah Hasbullah Hayyuningtias, Riza Hidayah, Rihmah Alifah hikmatiar, hamzarudin Ishafit Ishafit Ishafit Jauhari Isma Alip Jauhari, Ishafit Kabul Setiya Budi Kartika Firdausy Khoirunnisa, Itsnaini Irvina Konsenius Wiran Wae Lazwardi, Ahmad Leto, Kristina Theresia Lukmanul Hakim Lukmanul Hakim M. Burhanuddin Latief M. Khairul Ardi Mahfudz, Khawarizmy Margiono Marini Amalia Ocvianti Maulidan, Muhammad Moh. Irma Sukarelawan Moh. Toifur Muchlas , Muchlas - Muchlas Muchlas Muchlas Muchlas Murinto Murinto Murti, Bayu Krisna Mustofa Ahyar Mustofa Ahyar Nur Hamida Siregar Nur Ikhwan Nurfitni, Diana Nurrahman, Arip Okimustava Okimustava Okimustava Okimustava Putra, Iqbal Adi Raharja, Endra Putra Rahmatul Bayyinah, Rahmatul Reza Ariefka Ricka Tanzilla Ricka Tanzilla Riza Hayyuningtias Rizky Bayu Kurniawan Sabarudin Saputra Saharul Saharul Saharul, Saharul Sahlan Sahlan Samana, Fazaki Ramadhani Anwar Saumarachmawati, Putri Ani Servia Shalihin, Rahmat Ryadhush Sina, Tuti Asmianti Siregar, Nur Hamida Siswoyo, Wuryanto Puji Sukatin, Sukatin Suparwoto Suparwoto Suparwoto Suparwoto Suparwoto Suparwoto Suyadi Suyadi Syafutri, Eka Sya’bania, Nursina Tanzilla, Ricka Ulinnuha Yudiansa Putra Wae, Konsenius Wiran Wahab, Dedi Suwandi Wahyu Saputra Wako, Mohamed Yusuf Wandira, Cintha Ayu Widodo Widodo Widodo Widodo Yohakim, Yoman Ribeta Ratu Yoky Novra Silta Yoman Ribeta Ratu Yohakim Z. Zulfakriza Zulfakriza, Zulfakriza