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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) IAES International Journal of Robotics and Automation (IJRA) International Journal of Applied Power Engineering (IJAPE) AQUATIC SCIENCE & MANAGEMENT Jurnal Pendidikan IPA Indonesia JTSL (Jurnal Tanah dan Sumberdaya Lahan) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Edufisika: Jurnal Pendidikan Fisika PENDIPA Journal of Science Education COMPTON: Jurnal Ilmiah Pendidikan Fisika Kasuari: Physics Education Journal (KPEJ) Silampari Jurnal Pendidikan Ilmu Fisika Darmabakti: Jurnal Inovasi Pengabdian dalam Penerbangan Journal Evaluation in Education (JEE) Jurnal Inovasi Pengabdian Masyarakat Pendidikan East Asian Journal of Multidisciplinary Research (EAJMR) IJOEM: Indonesian Journal of Elearning and Multimedia Amplitudo: Jurnal Ilmu dan Pembelajaran Fisika IJIS Edu : Indonesian Journal of Integrated Science Education
Mayub, Afrizal
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Transportation Other

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Role Analysis of E-Learning Program in Physical Learning Mayub, Afrizal
Jurnal Pendidikan IPA Indonesia 2018: Article in Press
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v0i0.12933

Abstract

This study aimed to find out the application of e-learning program, the role of e-learning program and how important the role of e-learning program in Physics learning is. The method used included the creation of e-learning program through the stage of analyzing, designing, program writing and program testing. The sample used consisted of Chemistry study program students of odd semester of academic period of 2014/2015 and 2015/2016 which amounted to 80 people. From the data processing, it was revealed that e-learning program can be applied through e-learning modules, the role of e-learning program was in the category of "moderately contribute" with the score of 3.44 (scale 1 -5). While the relation between e-learning program with its role in Fundamental of Physics learning based on the theoretical mean for the category of moderate + high/strong + very high/very strong was equal to 91.25%, while for low/weak category was equal to 8.75%. However, if based on realistic mean for category of moderate + high/strong + very high/very strong was equal to 76.25%, whereas for category of low/weak and very low/very weak was equal to 23.75%.
Robot Inverted Pendulum Beroda Dua (IPBD) dengan Kendali Linear Quadratic Regulator (LQR) FAHMIZAL, FAHMIZAL; ARROFIQ, MUHAMMAD; ADRIAN, RONALD; MAYUB, AFRIZAL
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 2 (2019): ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i2.224

Abstract

ABSTRAKMakalah ini memaparkan proses pemodelan robot inverted pendulum beroda dua (IPBD) menggunakan dinamika Lagrange. Setelah sistem model robot IPBD diperoleh, teknik kendali optimal dalam hal ini menggunakan linear quadratic regulator (LQR) digunakan untuk melihat step respon sistem dan tanggapan respon sistem terhadap gangguan. Sebelum kendali LQR diimplementasikan, simulasi menggunakan Simulink Matlab dilakukan untuk mendapat parameter gain K pada kendali LQR. Selanjutnya, dengan mengubah-ubah matriks pembobot Q akan diperoleh variasi gain K. Pada penelitian ini dilakukan variasi matriks pembobotan Q sebanyak lima jenis. Sedangkan matriks elemen R dituning dengan nilai satu. Dari hasil pengujian diperoleh bahwa dengan membesarkan pembobotan matriks Q, dihasilkan respon menuju keadaan steady lebih cepat dan overshoot berkurang. Parameter gain K dari hasil simulasi selanjutnya akan diimplementasikan secara embedded programming ke dalam Arduino Uno pada sistem robot IPBD.Kata kunci: Inverted pendulum beroda, Pemodelan, LQR ABSTRACTThis paper describes the process of modeling two-wheeled pendulum inverted robots (IPBD) using the Lagrange dynamics. After the IPBD robot model system was obtained, the optimal control technique in this case using a linear quadratic regulator (LQR) was used to see the system response step and the response of the system response to interference. Before the LQR control is implemented, simulation using Matlab Simulink is conducted to get the gain K parameter on the LQR control. Furthermore, by varying the weighting matrix Q, the gain variation K will be obtained. There are five types of Q weighting matrix in this research and the R element matric is tuned with a value of 1. From the test, obtained results show that by raising the weighting matrix Q is produced a faster response to the steady state and overshoot is reduced. At the final stage, the gain K parameter from the simulation results will be implemented by embedded programming into Arduino Uno on the IPBD robot system.Keywords: Wheeled inverted pendulum, Modelling, LQR
Kendali Logika Fuzzy pada Car Like Mobile Robot (CLMR) Penjejak Garis FAHMIZAL, FAHMIZAL; MURTI, BUDI BAYU; PRATAMA, DONNY BUDI; MAYUB, AFRIZAL
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 6, No 3 (2018): ELKOMIKA
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v6i3.451

Abstract

ABSTRAKMakalah ini memaparkan perancangan sistem kendali logika fuzzy untuk mengatur kecepatan dan arah sudut steering pada car like mobile robot (CLMR) dengan menggunakan metode Ackermann steering. CLMR penjejak garis dirancang menggunakan 16 buah photodiode, dan terdapat 7 buah membership fuzzfikasi dari pembacaan error dan last error sehingga terbentuk 49 aturan. Untuk menguji perfoma kendali fuzzy pada sistem CLMR dalam mengikuti lintasan garis maka dilakukan pengujian dengan bentuk lintasan berupa garis lurus dan berbelok serta zig-zag dalam satu lintasan putar. Proses variasi nilai keanggotaan fuzzifikasi masukan dan defuzzifikasi keluaran dilakukan sebanyak lima kali. Dari hasil pengujian diperoleh bahwa kendali logika fuzzy yang diaplikasikan pada sistem mampu membuat pergerakan CLMR sukses mengikuti lintasan uji selama 9,38 detik lebih baik 0,53 detik dari kendali PID. Selanjutnya, hasil rancangan sistem CLMR ini merupakan sebuah prototipe self-driving car.Kata kunci: car like mobile robot, robot penjejak garis, fuzzy, self-driving car ABSTRACTThis paper describes the design of a fuzzy logic control system to adjust the speed and direction of the angle of the steering on the car like mobile robot (CLMR) using the Ackermann steering method. CLMR line tracking is  designed using 16 photodiode pieces, and there are 7 fuzzfication membership from reading error and last error so that 49 rules are formed. To test the fuzzy control performance on the CLMR system in following the line trajectory, it was tested with the form of a straight line and a turn and a zigzag in a rotary track. The process of varying input membership fuzzification values and output defuzzification is done five times. From the test results, it was found that the fuzzy logic control applied to the system was able to make CLMR movement successfully followed the test path for 9.38 seconds better than 0.53 seconds of PID control. Furthermore, the results of the CLMR system design are a prototype self-driving car.Keywords: car like mobile robot, line tracking robot, fuzzy, self-driving car
Determination of organic content and the use of eco-enzyme solutions in reducing organic levels in water samples from Cukuh Raya Beach, Kaur Regency, Bengkulu Province, Indonesia Noviana, Noni; Johan, Henny; Mayub, Afrizal; Nurhamidah; Firdaus, M. Lutfhi
JASM Vol. 12 No. 1 (2024): APRIL
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v12i1.54930

Abstract

Cukuh Raya Beach coastal water is potentially polluted by organic materials from shrimp ponds. The purpose of this study was to determine the content of organic materials (ammonia [NH3], nitrate [NO3], phosphate [PO4], and fatty oil) discharged into the coastal waters and to examine the role of eco-enzymes in reducing the organic material levels. Two points of sampling were selected, i.e., 10 and 100 m from the pipeline outfall discharge of shrimp ponds. An experiment was carried out to compare the level of organic content before and after the eco-enzyme solutions were given. Sampling and technique analysis of seawater were done following the Indonesian National Standards. The data were analysed using the Indonesian quality standards for marine biota and the pollution index. The results showed that seawater samples from the coast contained organic waste, with the highest levels at 10 m from the outfall. The level of organic content decreased after the addition of eco-enzyme solutions. The conclusion is that the organic materials (ammonia, nitrate, phosphate, and fatty oil) were found in water samples in the waters of Cukuh Raya Beach and were moderately polluted by ammonia (NH3). The addition of an eco-enzyme solution can reduce the concentration of organic materials.
IMPLEMENTASİ MODEL PHENOMENA BASED-INTERACTİVE CONCEPTUAL INSTRUCTİON (PB-ICI) DALAM PEMBELAJARAN IPBA UNTUK MENİNGKATKAN PENALARAN ILMİAH Johan, Henny; Mayub, Afrizal; Wikrama Whardana, Rendy; umaya, Umaya; wati, Devica
SILAMPARI JURNAL PENDIDIKAN ILMU FISIKA Vol 6 No 1 (2024): Silampari Jurnal Pendidikan Ilmu Fisika (SJPIF)
Publisher : LPPM UNIVERSITAS PGRI SILAMPARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31540/sjpif.v6i1.2587

Abstract

Physics is a science that involves high curiosity about natural phenomena which are then solved using scientific methods. The learning program is designed to improve scientific reasoning skills, one of which is by using the Phenomena Based-Interactive Conceptual Instruction (PB-ICI) learning model. This research aims to implement the Phenomena Based-Interactive Conceptual Instruction (PB-ICI) learning model to improve students' scientific reasoning through IPBA courses. This research uses quasi-experiment, including pre-experimental, experimental and experimental data analysis stages. Based on the results of data analysis, it is known that student reasoning is spread across the categories of inductive-deductive reasoning at 30%), reasoning with evidence at 33%, reasoning with data at 33%, no reasoning at 3%, and undefined at 0%. The effectiveness of IPBA learning in instilling scientific reasoning is in the medium category with a distribution percentage of 63%. Based on these results, it can be interpreted that students have been able to organize various knowledge in the form of concepts, theories, laws, principles as well as data and facts to explain earth and space phenomena comprehensively. It can be concluded that IPBA learning using the PB-ICI model can train reasoning skills. After learning activities, 63% of the total students had reasoning in the categories of inductive-deductive reasoning and reasoning with evidence.
Assembling, simulating, and recording robot videos as an effort to motivate middle school students and teachers of Science in Bengkulu Province Mayub, Afrizal; Fahmizal, Fahmizal; Firdaus, M. Lutfi; Johan, Henny; Ruyani, Aceng; Karyadi, Bhakti
IAES International Journal of Robotics and Automation (IJRA) Vol 12, No 2: June 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijra.v12i2.pp146-156

Abstract

The aim of this study was to determine the motivation of science teachers and students towards science after participating in the activity of assembling, simulating, and recording line follower robots as an effort to motivate middle school students and teachers towards science in Bengkulu Province. The research was done by direct practicing, where 60 students and 15 teachers of three junior high school (SMP): SMP Negeri 06 Seluma, SMP Negeri 02 Kota Bengkulu, and SMP Negeri 8 Rejang Lebong, were involved as the research subjects. The research activity concluded that the schools are ready to prepare simple electronics/robot laboratories for the three research subjects and the science teachers and students were motivated to learn science. It was seen from the score of 3.95 (scale of 1 to 5) for students, and for the science teacher, the score was 3.83 (scale of 1 to 5). The science teachers will follow up on robotics activities so that students will be interested in learning science at home and school.
Bipedal robot center of pressure feedback simulation for center of mass learning Mayub, Afrizal; Fahmizal, Fahmizal; Lazfihma, Lazfihma
IAES International Journal of Robotics and Automation (IJRA) Vol 13, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijra.v13i2.pp220-232

Abstract

This research aims to create a walking bipedal robot with center of pressure feedback simulation for the center of mass learning, describe its feasibility for learning, describe students' motivation to learn, and describe students' science literacy after using it. The research method used ADDIE (analysis, design, development, implementation, and evaluation). The research data was obtained using a motivation scale questionnaire, science literacy scale, and feasibility scale. The research sample was 48 people; after the research obtained, the simulation of bipedal robot pressure center feedback for center of mass learning can be implemented with the principle of the robot's center of mass detected on the sole of the robot's foot equipped with a force sensitive resistor (FSR) sensor, the position of the center of mass is visible on the monitor screen as a center of mass learning, so that it can motivate students to learn and improve students' science literacy. This can be seen from the feasibility scale score, motivation scale, and science literacy scale of 4.133, 4.072, and 4.067 (scale 1 to 5), respectively, in the "good" category.
Analisis Kepuasan Terhadap Pelatihan Strategi Mitigasi dan Revitalisasi Daerah Rawan Bencana Banjir di Desa Rindu Hati Melalui Pemanfaatan Teknologi Berbasis ICT Terpadu: Analisis Kepuasan Terhadap Pelatihan Strategi Mitigasi dan Revitalisasi Daerah Rawan Bencana Banjir di Desa Rindu Hati Melalui Pemanfaatan Teknologi Berbasis ICT Terpadu Risdianto, Eko; Mayub, Afrizal; Coastera, Funny Farady
Darmabakti: Jurnal Inovasi Pengabdian dalam Penerbangan Vol. 4 No. 1 (2023): Darmabakti: Jurnal Inovasi Pengabdian dalam Penerbangan
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat Politeknik Penerbangan Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52989/darmabakti.v4i1.110

Abstract

Tujuan pengabdian ini adalah meningkatkan pengetahuan dan keterampilan masyarakat dengan melakukan Pelatihan SDM Desa Rindu Hati terkait strategi mitigasi dan revitalisasi bencana alam banjir melalui pemanfaatan teknologi berbasis ICT Terpadu. Hasil yang diharapkan dari pengabdian ini yaitu minimal terdapat 6 orang SDM yang dapat mengelola teknologi informasi dan terpasangnya infrastruktur berupa CCTV di beberapa titik yang rawan dampak banjir berbasis internet yang bisa dikontrol oleh Perangkat Desa (Pusat monitoring) dan semua warga Desa Rindu Hati kapan saja dan dimana saja serta menjadikan Desa Rindu Hati sebagai desa binaan dan percontohan kesiapan mitigasi bencana banjir dan revitalisasi pasca bencana di daerah Bengkulu tengah.  Manfaat yang diharapkan adalah meningkatnya pengetahuan dan keterampilan dalam penerapan ilmu dan teknologi untuk mitigasi dan revitalisasi pasca bencana. Memberikan sarana dan prasarana pendukung alat komunikasi jarak jauh untuk proses mitigasi dan revitalisasi bencana banjir di Desa Rindu Hati. Memberikan alternatif teknologi, memonitoring beberapa titik daerah rawan banjir berbasis android dan terpusat. Meningkatnya citra UNIB sebagai perguruan tinggi pemasok Teknologi Tepat Guna (TTG) untuk kawasan pedesaan. Juga berkontribusi pada IKU perguruan tinggi. Meningkatkan motivasi dan peluang dosen untuk menerapkan hasil-hasil penelitiannya (Riset) kepada masyarakat. Terkait kepuasan masyarakat terhadap kegiatan pelatihan yang dialkukan, diperoleh data bahwa ada 26 responden yang masuk ke kategori sangat setuju terhadap poin-poin yang dinyatakan di dalam angket, sedangakn untuk tiga kategori lainnya yaitu setuju, tidak setuju dan sangat tidak setuju berjumlah 0 responden. Ini menujukkan bahwa 100% responden memberikan respon yang positif dan merasa puas terhadap kegiatan pelatihan yang telah dilakukan.
Solar cell based power-bank prototype as a media to increase students' scientific literacy Mayub, Afrizal; Delima, Ega Marita; Nursa’adah, Euis; Fahmizal, Fahmizal; Lazfihma, Lazfihma
International Journal of Applied Power Engineering (IJAPE) Vol 13, No 4: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v13.i4.pp989-1004

Abstract

This research aims to i) implement the solar cell based power-bank prototype for learning media; ii) describe the feasibility of the solar cell-based power-bank prototype for learning; and iii) describe students' scientific literacy. This research method uses the analysis, design, development, implementation, and evaluation (ADDIE) research and development model. The subjects of this research are class IX students and science teachers at SMPN 4 Central Bengkulu. Data collection techniques include questionnaires, tests, and interviews. The data analysis technique uses N-gain analysis, percentages, and the Aiken's V formula. The research results show that the media developed is valid with an Aiken index value of 0.98 > the minimum standard Aiken' V of 0.92 and can increase students' scientific literacy based on an N-gain of 0.92. 0.71, this can be seen in the dimensions of context and content based on N-gain of 0.73 and 0.69, while the dimensions of attitude, curiosity, respect, and willingness, reflect the respective percentages of 79.62%, 78.86%, 78.89%, 75.60%. Based on the results of the hypothesis test, the sig value is obtained. (2 tailed) 0.000 < 0.05 which means Ha is accepted and Ho is rejected, which means the solar cell-based renewable energy media used in science learning influences the increase in students' scientific literacy.
Class Mapping of Tsunami's Risk using Global Positioning Geodetic System in Bengkulu University's Environment Umaya, Umaya; Mayub, Afrizal; Johan, Henny; Farid, Muchammad; Wardana, Rendy Wikrama
Kasuari: Physics Education Journal (KPEJ) Vol 7, No 1 (2024): June 2024
Publisher : Universitas Papua, Jurusan Pendidikan Fisika FKIP Unipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37891/kpej.v7i1.517

Abstract

Bengkulu University is located in the coastal area precisely in Muara Bangka Hulu sub-district of Bengkulu City, which is one of the sub-districts bordering the coastline. Areas or regions bordering the coastline have a higher level of tsunami hazard compared to areas or regions far from the coastline. The marking of the evacuation point area in the Bengkulu University environment has not adjusted to the disaster mitigation parameters. The purpose of this research is to analyse and map the tsunami hazard class at Bengkulu University in a preventive mitigation effort as well as a consideration for future policies. Primary data measurements used Geodetic GPS devices and were analysed using GAMIT and GLOBK 10.6 software. While secondary data obtained from geospatial information agencies and DEMNAS were analysed using arcgis software. Based on the results of the analysis, it is known that the environment of Bengkulu University as a whole has 3 classes of hazard zones including high hazard class, medium hazard class, and low hazard class.
Co-Authors ACENG RUYANI Aniliawati, Ur Arsela Eko Listiono BHAKTI KARYADI Budi Bayu Murti Budiyanto, Ma’un Deddy Bakhtiar, Deddy Defianti, Aprina Delima, Ega Marita Dinata, Kristian Eko Risdianto Elsi Adelia Fitri Esra, Gracia Fahmizal, Fahmizal Farid, Muchammad Firdaus, M. Lutfhi Firdaus, Mochamad Lutfi Funny Farady Coastera, Funny Farady Henny Johan Herawati, Asmida Iwan Setiawan Lazfihma, Lazfihma M. Farid, M. M. Lutfi Firdaus, M. Lutfi Malau, Defi Dormasi Maulana, Yudi Muhammad Arrofiq Nirwana, Nirwana Noviana, Noni Nurcahyani Nurhamidah Nursa'adah, Euis Nursa’adah, Euis Parlindungan, Deni Pistira, Pistira PRATAMA, DONNY BUDI Pratiwi, Revika Julia Purwaningsih Rijalussalam, Dhiya Uddin Riska, Dara Ronald Adrian, Ronald Silaban, Sintiana Sudirman Sudirman Sutarno Sutarno SYAHRONI, IVAN Umaya Umaya, Umaya Wardana, Rendy Wikrama wati, Devica Wikrama Whardana, Rendy Wirahayu, Maya