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All Journal Ulul Albab: Jurnal Studi dan Penelitian Hukum Islam Berkala Fisika Indonesia : Jurnal Ilmiah Fisika, Pembelajaran dan Aplikasinya Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum MAHKAMAH: Jurnal Kajian Hukum Islam International Journal of Science and Applied Science: Conference Series JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences Jurnal Filsafat SPEKTRA: Jurnal Kajian Pendidikan Sains Jurnal Environmental Science PEDAGOGIA Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Pendas : Jurnah Ilmiah Pendidikan Dasar JPF : JURNAL PENDIDIKAN FISIKA Jurnal Kumparan Fisika Indonesian Review of Physics (IRiP) Generation Journal Ihsan: Jurnal Pengabdian Masyarakat Jurnal Riset Pendidikan Fisika Navigation Physics : Journal of Physics Education Ekonomi Bisnis Manajemen dan Akuntansi (EBMA) Proceeding International Seminar of Islamic Studies Al-Afaq: Jurnal Ilmu Falak dan Astronomi Cakrawala: Jurnal Pengabdian Masyarakat Global Edutainment : Jurnal Ilmu Pendidikan dan Kependidikan Jurnal Pengabdian Masyarakat Indonesia Sejahtera Cendikia Pendidikan Azkayra: Jurnal Pengabdian Masyarakat dan Sosial Bumi: Jurnal Hasil Kegiatan Sosialisasi Pengabdian Kepada Masyarakat Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Cakrawala Akademika
Abu Yazid Raisal
Universitas Muhammadiyah Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Pemanfaatan Metode Moving Average dalam Menentukan Awal Waktu Salat Subuh Menggunakan Sky Quality Meter (SQM) Abu Yazid Raisal; Yudhiakto Pramudya; Okimustava ,; Muchlas ,
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 5, No 1 (2019)
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.72 KB) | DOI: 10.30596/jam.v5i1.3121

Abstract

The beginning of prayer time is important for Muslims because Islam advocates for prayer at the beginning of time. The beginning of Zuhr, Asar and Maghrib prayer times can be done by looking position of the Sun directly. However, the position of the sun cannot be directly observed to determine the beginning of the Fajr and Isha prayer times, because the Sun is below the horizon. The beginning of the Fajr prayer time can be determined by measuring sky brightness using the Sky Quality Meter (SQM). Many factors can affect SQM in collecting light so that the data is not separated from noise. The use of the moving average method reduces noise, making it easier to determine the beginning of the Fajr prayer time using SQM.
Pengembangan Media Pembelajaran Astronomi Rasi Bintang untuk Anak Usia Dini Muhammad Qorib; Zailani Zailani; Radiman Radiman; Amrizal Amrizal; Abu Yazid Raisal
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 7, No 2 (2021): Al-Marshad
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jam.v7i2.8057

Abstract

Astronomy is important to be introduced and taught to children because many things related to it are closely related to the actual lives of children. To introduce astronomy to children, the thing that is most considered as an obstacle is the availability of astronomical tools and the practical use of children learning astronomy. The method used in this research is Research and Development (research and development). Based on the assessments of the two validators for the media, the average value obtained is 76.88%. In terms of media, this constellation board is categorized as quite feasible to be developed. Based on the assessments of the two validators for the material, the average value obtained is 80.36%. From a media perspective, this constellation board is in the category worthy of being developed. The average validation from media experts and material experts was obtained at 78.62% with a fairly decent category.
Berbagai Konsep Hilal di Indonesia Abu Yazid Raisal
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 4, No 2 (2018)
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (852.216 KB) | DOI: 10.30596/jam.v4i2.2478

Abstract

The issue of the initial stipulation of the month (especially Ramadan, Shawwal and Zulhijah) in Indonesia to this day has not ended. One reason for the problem of defining the new moon. Admittedly in Indonesia there are a variety of views and opinions regarding the definition of the new moon which between one another seems contradictory. Nahdlatul Ulama defines the hilal to be visible (ruukyat), Muhammadiyah defines enough by reckoning, and the Ministry of Religion (Government) defines the possibility of being seen (let rukyat). Each of these views has advantages and disadvantages, and each of them has a syar'i's basic foundation and their respective knowledge.Keywords: Hilal, Beginning of The Month, Reckoning 
PENGEMBANGAN MEDIA AJAR LUBANG HITAM MENGGUNAKAN MODEL PENGEMBANGAN ADDIE Hasrian Rudi Setiawan; Arwin Juli Rakhmadi; Abu Yazid Raisal
Jurnal Kumparan Fisika Vol 4, No 2: Agustus 2021
Publisher : Unib Press, Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jkf.4.2.112-119

Abstract

Salah satu faktor yang dapat menyebabkan kesulitan dalam proses pembelajaran adalah pendidik tidak menggunakan alat peraga.  Lubang hitam merupakan suatu daerah dalam ruang-waktu dengan medan gravitasi begitu kuat bahkan cahaya tidak dapat lolos. Hal ini mengakibatkan lubang hitam tidak dapat diamati secara langsung. Penelitian ini bertujuan untuk mengembangkan sebuah media ajar tentang lubang hitam di Observatorium Ilmu Falak Universitas Muhammadiyah Sumatera Utara (OIF UMSU). Jenis penelitian ini adalah Research and Development (penelitian dan pengembangan). Model pengembangan yang digunakan adalah model pengembangan ADDIE (Analysis, Design, Development, Implemetation, dan Evaluation). Penelitian ini dibatasi hanya sampai tahap Development. Berdasarkan penilaian dari dua validator untuk media, rata-rata nilai yang diperoleh adalah 76,88%. Dari segi media, media ajar lubang hitam ini masuk kategori cukup layak untuk dikembangkan. Berdasarkan penilaian dari dua validator untuk materi, rata-rata nilai yang diperoleh adalah 80,36%. Dari segi media, media ajar lubang hitam ini masuk kategori layak untuk dikembangkan. Rata-rata validasi dari ahli media dan ahli materi adalah 78,62% dengan kategori cukup layak.
Perbandingan Perhitungan Waktu Shalat Menggunakan Astrolabe RHI dan Accurate Times Hasrian Rudi Setiawan; Arwin Juli Rakhmadi; Muhammad Hidayat; Abu Yazid Raisal; Hariyadi Putraga
Al-Ahkam Jurnal Ilmu Syari’ah dan Hukum Vol. 6 No. 2 (2021): Al-Ahkam: Jurnal Ilmu Syari'ah dan Hukum
Publisher : IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/alahkam.v6i2.3416

Abstract

This study aims to determine the comparison of the calculation of prayer times using the RHI Astrolabe and Accurate Times Software. In addition, this study also describes in detail the steps in determining prayer times using the RHI Astrolabe and Accurate Times Software. The research method used in this study is experimental. The results of this study indicate that there is a difference in the calculation of prayer times on December 20 between the RHI Astrolabe and Accurate Times Software. The difference between Asr is 8 minutes, Isha 6 minutes and Fajr 1 minute. Meanwhile, during Zuhr, Maghrib and Shuruq there is no difference in the calculation of the RHI Astrolabe with the Accurate Times Software.   Penelitian ini bertujuan untuk mengetahui perbandingan perhitungan waktu shalat menggunakan Astrolabe RHI dan Software Accurate Times. Tujuan penelitian lainnya adalah untuk menjelaskan secara rinci langkah-langkah dalam menentukan waktu shalat menggunakan Astrolabe RHI dan Software Accurate Times. Adapun metode penelitian yang digunakan dalam penelitian ini yaitu eksperimen. Hasil penelitian ini menunjukkan bahwa terdapat selisih perbedaan perhitungan waktu shalat pada tanggal 20 Desember antara Astrolabe RHI dengan Software Accurate Times. Adapun selisih pada waktu Ashar 8 menit, Isya 6 menit dan Subuh 1 menit. Sedangkan waktu Zuhur, Maghrib dan Syuruq tidak ada perbedaan pada perhitungan menggunakan Astrolabe RHI dan Software Accurate Times.
THE FALAK SCIENCE OBSERVATORY OF UNIVERSITY OF MUHAMMADIYAH NORTH SUMATRA (OIF UMSU) AND THE CONTRIBUTION IN FAJR TIME RESEARCH Arwin Juli Rakhmadi; Abu Yazid Raisal; Muhammad Hidayat; Hariyadi Putraga; Isra Hayati
Proceeding International Seminar of Islamic Studies INSIS 2 (January 2021)
Publisher : Proceeding International Seminar of Islamic Studies

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.997 KB)

Abstract

The Falak Science Observatory of the University of Muhammadiyah North Sumatra (abbreviated OIF UMSU) is an observatory that is engaged in the study and research of Islamic Astronomy. Structurally, this institution is under the auspices of the University of Muhammadiyah North Sumatra (UMSU). One focus of The Falak Science Observatory of the University of Muhammadiyah North Sumatra is the fajr time (true dawn) research by using Sky Quality Meter (SQM) instruments. OIF UMSU's Fajr time research data has compiled up to hundred data (days), collected from 2017 to 2020. Besides, some of OIF UMSUs data also been utilized by various parties in the research and development of the dawn study and Falak science in general. This article will present at a glance about OIF UMSU and the contribution to Fajr Time research using Sky Quality Meter.
Effectiveness Of Active Learning Method Quiz Team Type On Student Learning Outcomes In Subject Ohm Law In SMA Negeri 1 Pundong Abu Yazid Raisal; Nanang Suwondo
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.v1i2.716

Abstract

This study aims to measure the increase in student learning outcomes from cognitive aspects and student activity between active quiz type learning methods and conventional methods. The sampling technique is non-random sampling. Data was collected using the pre-test and post-test for cognitive aspects while the affective aspects used the observation. Analysis of the data used the normality test, homogeneity test, and hypothesis testing. The hypothesis test used is a two-party t test. The results show that tcount= 7.273 > ttable= 2.01 at a significant level of 5%. It means that there are significant differences for cognitive aspects between learning outcomes using the team quiz type and conventional methods of active learning methods. Overall the team quiz method is more effective for improving student learning outcomes from cognitive aspects, and student activities.
Measuring the Apparent Magnitude of Planet Mars on August 1st and October 2nd, 2018 at the Falak Observatory at Muhammadiyah University of North Sumatera Muhammad Hidayat; Arwin Juli Rakhmadi; Abu Yazid Raisal
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.v3i1.1838

Abstract

The Bright stars that were seen by the eyes are the received quantity of the energy flux sent from the celestial body. The energy flux is inversely proportional to the distant quadrant which means that the light of the stars that are visible to our eyes cannot be compared to the actual brightness or even weaker than the others and the visible star lights the apparent magnitude. The purpose of this study is to measure the apparent magnitude of Mars. This research methodology is quantitative, by taking number of images/videos of Mars and then the data is processed by using IRIS software. The results of the analysis is using IRIS software that shows the value of the apparent magnitude of Mars on August 1st, 2018 is (-1.56 ± 0.33) and October 2nd 2018 is (-1.84 ± 0.08). This was taken by selecting the best image result in clear night sky.
The Effect of the Installation Angle of the Sky Quality Meter on the Night Sky Brightness and the Beginning of the Fajr Prayer Time Abu Yazid Raisal; Muhammad Hidayat; Leo Hermawan; Arwin Juli Rakhmadi
Indonesian Review of Physics (IRiP) Vol. 3 No. 2 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/irip.v3i2.2074

Abstract

Measuring the brightness of the night sky and determining the start of Fajr prayer times can be done using SQM. Observations were made at OIF UMSU with coordinates 3o 34' 55.06" N and 98o 43' 17.09" E. The sky brightness was measured using three SQMs mounted facing the zenith, eastern horizon, and western horizon. The night sky brightness values for SQM directed to the zenith, eastern horizon, and western horizon are 18.23 mpsas, 15.82 mpsas, and 15.47 mpsas. The beginning of fajr prayer time produced by SQM is after the beginning of fajr prayer time obtained using the Accurate Times concerning the Sun's altitude 18o below the horizon. The difference obtained by SQM directed to the zenith, eastern horizon, and western horizon is 29.5 minutes, 36.7 minutes, and 39.5 minutes. In other words, the beginning of Fajr prayer time used in Indonesia is earlier than it should be.
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.
Co-Authors Abdurrohman Chapakiya Amrizal Amrizal Ananda, Fadilla Sayu Anggraini, Maya Dita Ariefka, Reza Arif Sapta Mandala Arif Sapta Mandala Ariswan Ariswan Arwin Juli Rakhmadi Arwin, Arwin Juli Rakhmadi Aryunita, Srika Budi Utama Butar Butar, Arwin Juli Rakmadi Diyah Anggraini Edy Ervianto Fadilla Sayu Ananda Firdaus, Muhammad Dimas Hadi Ismail, Abdul Hariyadi Putraga Hasibuan, Alya Fathi Muhammad Hasrian Rudi Setiawan Hassan, Rohana Hermawan, Leo Heru Kuswanto Hidayat, Muhammad Hizami Sabil Ida Hanifah Isra Hayati Jen Agus Perry Hasibuan Khair, Alfath Leo Hermawan Marataon Ritonga Mavianti, Mavianti Mega Sukma Muchlas , Muchlas Muchlas Muhammad Hidayat Muhammad Qorib Mustofa Ahyar Nanang Suwondo Nanang Suwondo Nilfa Zalukhu Noveri Lysbetti M Nurahman, Arip Nurhalim Nurhalim, Nurhalim Nurul Zahriani Jf Okimustava Okimustava Radiman Radiman Rahyul Amri Rihan Yuhyi Rizka Harfiani Rizkiyan Hadi Rosynanda Nur Fauziah Rosynanda Nur Fauziah Rukiyati Rukiyati Sahroni, Taufik Roni Sakti Hutabarat Siagian , Ruben Cornelius Siagian, Ruben Cornelius Taufiq Iradah Telaumbanua Vira Aurel Wahyu Setyaningrum Yudhiakto Pramudya Yuhyi, Rihan Zailani Zailani