Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)最新文献

{"title":"Penerapan Pembelajaran Daring Menggunakan LMS (Google Classroom Dan Quiper) Untuk Meningkatkan Hasil Belajar Fisika Pada Materi Gerak Harmonis Siswa Kelas X MIPA 2 Semester Genap SMA Negeri 1 Ngemplak Boyolali Tahun Pelajaran 2019/ 2020","authors":"Bangun Sartono","doi":"10.20961/PROSIDINGSNFA.V5I0.46590","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46590","url":null,"abstract":"Abstract: The objectives of this study were: 1) to describe the online learning process (on line) in the physics subject by applying the use of the google classroom and quiper learning management system (LMS), 2) to describe the improvement of learning outcomes in physics. This research was conducted using classroom action research which was designed through two cycles with procedures for planning, implementing actions, observing, and reflecting in each cycle. This research activity was carried out in the even semester of the 2019/2020 school year, with the research subjects of class X MIPA 2 semester 2 SMA N 1 Ngemplak in the 2019/2020 school year. The data needed in this study were obtained through test and non-test techniques. The non-test technique is in the form of direct observation / observation of students when on line learning activities take place both in the first cycle and the second cycle, using the assessment instruments that have been provided. While the test technique is in the form of an on line test which is carried out after each cycle ends. From the results of research on learning activities in the network (online / on line) that have been carried out for two cycles and based on all the discussions and analyzes that have been carried out, it can be concluded that: The application of online learning using the Learning Management System (Google Classroom and Quiper) can improve the results. learning physics in the material of harmonious motion for students of class X MIPA 2 even semester SMA Negeri 1 Ngemplak Boyolali in the academic year 2019/2020. The average value of students in cycle I increased by 10.51 or 17.37%, from 60.51 to 71, 02, and increased again in cycle II of 15.38 or 25.42%, namely 71.02 to 75.90, and included in the good categoryTujuan penelitian ini adalah : 1) mendeskripsi proses pembelajaran daring (on line) mata pelajaran Fisika dengan menerapkan penggunaan LMS (learning management system) google classroom dan quiper, 2) mendeskripsi peningkatan hasil belajar Fisika. Penelitian ini dilaksanakan dengan menggunakan penelitian tindakan kelas yang dirancang melalui dua siklus dengan prosedur perencanaan, pelaksanaan tindakan, pengamatan, dan refleksi dalam tiap-tiap siklus. Kegiatan penelitian ini dilakukan pada semester genap tahun pelajaran 2019/2020, dengan subyek penelitian siswa kelas X MIPA 2 semester 2 SMA N 1 Ngemplak tahun pelajaran 2019/2020. Data-data yang diperlukan dalam penelitian ini diperoleh melalui teknik tes dan non tes. Teknik non tes berupa observasi/ pengamatan langsung pada siswa saat kegiatan pembelajaran on line berlangsung baik pada siklus pertama maupun siklus kedua, dengan menggunakan instrumen penilaian yang telah disediakan. Sedangkan teknik tes berupa tes on line yang dilakukan setelah tiap-tiap siklus berakhir. Dari hasil penelitian kegiatan pembelajaran dalam jaringan ( daring/on line) yang telah dilakukan selama dua siklus dan berdasarkan seluruh pembahasan serta analisis yang ","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128072127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sistem Kendali Penggerak Motor Stepper Pada Orbital Welding Menggunakan Perangkat Lunak LabVIEW","authors":"Budi Suhendro, Landung Malik Antoro, S. Suroso","doi":"10.20961/PROSIDINGSNFA.V5I0.46593","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46593","url":null,"abstract":"Abstract: Orbital welding motion in welding for joining pipes or cylinders, has a circular or circular motion that includes horizontal or vertical motion. The orbital velocity for a welding gun is expected to have a steady and stable velocity. Therefore, the aim of this research is to design a control system to control the movement of a stepper motor in orbital welding using LabVIEW software and Arduino Mega 2560 hardware. , this system requires LabVIEW software and hardware in the form of an Arduino Mega 2560, and a TB6600 driver to control the movement of the actuator or stepper motor. The movement of the stepper motor in this welding is divided into 2 segments. Segment 1 moves from an angle of 0º-180º in a clockwise motion and segment 2 moves from an angle of 0º-180º in a counter clockwise motion. In this study, 10 variations of speed were used to determine the appropriate movement or speed for circular welding. This speed variation starts from a frequency of 1000-5500 Hz. From the RSME test that has been carried out, the results obtained with low error values at frequencies of 1000 Hz and 1500 Hz with error values of 0.325 and 0.175. Meanwhile, from the test of average speed or RPM, the results obtained successively from the frequency of 1000 Hz-5500 Hz, namely 3 rpm, 6 rpm, 6,024 rpm, 8.975 rpm, 9.897 rpm, 12.057 rpm, 15.09 rpm, 14.915 rpm, and 17.93 rpm.Abstrak: Gerak pengelasan orbital pada pengelasan untuk penyambungan pipa atau silinder, mempunyai arah gerak mengitari atau melingkar yang mencakup gerak horizontal atau gerak vertikal. Kecepatan gerak orbital untuk sebuah welding gun diharapkan mempunyai kecepatan yang tetap dan stabil. Oleh karena itu, tujuan dari penelitian ini adalah membuat rancangbangun sistem kontrol pengendalian pergerakan motor stepper pada orbital welding menggunakan software LabVIEW dan hardware Arduino Mega 2560. Sebagai sumber tenaga gerak dari aktuator berupa motor stepper, agar dapat mengendalikan kecepatan dan arah sesuai dengan kebutuhan gerak dari motor, sistem ini membutuhkan perangkat lunak LabVIEW dan perangkat keras berupa Arduino Mega 2560, dan driver TB6600 untuk mengatur gerakan pada aktuator atau motor stepper. Pergerakan motor stepper dalam pengelasan ini terbagi menjadi 2 segment. Segment 1 bergerak dari sudut 0º-180º dengan pergerakan searah jarum jam dan segment 2 bergerak dari sudut 0º-180º dengan pergerakan berlawanan arah jarum jam. Pada penelitian ini dilakukan 10 variasi kecepatan yang berguna untuk menentukan pergerakan atau kecepatan yang sesuai untuk pengelasan melingkar. Variasi kecepatan ini dimulai dari frekuensi 1000-5500 Hz. Dari pengujian RSME yang telah dilakukan didapatkan hasil dengan nilai error yang rendah pada frekuensi 1000 Hz dan 1500 Hz dengan nilai error sebesar 0,325 dan 0,175. Sedangkan dari pengujian kecepatan atau RPM rata-rata didapatkan hasil secara berturut-turut dari frekuensi 1000 Hz-5500 Hz yaitu 3 rpm, 6 rpm, 6,024 rpm, 8,975 rpm, 9,897 rpm, 12,057 rpm, 15,09 ","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115319718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Perbandingan Dosis Keluaran Berkas Radiasi Pesawat Co-60 Merek Theratron Phoenix Dari Perubahan Nilai Panjang Dan Lebar Persegi Panjang Pada Luas Lapangan Yang Sama","authors":"Alya Nabilla, Dian Milvita, Mursiyatun Mursiyatun","doi":"10.20961/PROSIDINGSNFA.V5I0.46589","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46589","url":null,"abstract":"Abstract: Research has been carried out on the comparative analysis of the radiation dose of the Co-60 with the theratron phoenix by two stages, first to analyze the output dose according to the recommendations of the TRS 398 IAEA protocol with a field of 10 cm x 10 cm, a depth of 5 cm and SSD 80. cm, which aims to calculate the output factor, the second is to analyze the ratio of the output dose of changes in the value of length and width of the rectangle on the same field with five variations of the field, the results are compared according to the quality assurance by the AAPM TG 40. The results showed that the error value in the 10 cm x 10 cm, the error value was 0.05%, 5 cm x 6 cm, the error value for each change value was 0.426%, 0, 106%, 0.530%. 5 cm x 8 cm : 0.211%, 0.210%, and 0.419%. 5 cm x 13 cm : 0.207%, 0.311%, 0.104%. 6 cm x 12 cm : 0.206%. 6 cm x 19 cm : 0.610%, 0.713%, 0.102%. The value is still within the tolerance limit of the Co-60 AAPM TG 40 quality assurance protocol 2%.Abstrak: Telah dilakukan penelitian tentang analisis perbandingan dosis keluaran berkas radiasi pesawat Co-60 merek theratron phoenix, penelitian dilakukan dalam dua tahap, pertama menganalisis dosis keluaran sesuai dengan rekomendasi protokol TRS 398 IAEA dengan luas lapangan 10 cm x 10 cm, kedalaman 5 cm dan SSD 80 cm, yang bertujuan untuk menghitung faktor keluaran yang akan digunakan pada tahap selanjutnya, kedua menganalisis perbandingan dosis keluaran dari perubahan nilai panjang dan lebar persegi panjang pada luas lapangan yang sama dengan lima variasi luas lapangan, hasilnya dibandingkan sesuai dengan quality assurance yang dikeluarkan protokol AAPM TG 40 untuk Co-60. Hasil penelitian menunjukkan nilai error atau deviasi pada luas lapangan 10 cm x 10 cm nilai error sebesar 0,05%, luas lapangan 5 cm x 6 cm nilai error terhadap masing-masing nilai perubahan sebesar 0,426%, 0, 106%, 0,530%. Luas lapangan 5 cm x 8 cm nilai error sebesar 0,211%, 0,210%, dan 0,419%. Luas lapangan 5 cm x 13 cm nilai error sebesar 0,207%, 0,311%, 0,104%. Luas lapangan 6 cm x 12 cm nilai error sebesar 0,206%. Luas lapangan 6 cm x 19 cm nilai error sebesar 0,610%, 0,713%, 0,102%. Nilai masih berada dalam batas toleransi quality assurance Co-60 protokol AAPM TG 40 yaitu 2%.","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116041297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rancang Bangun Pengukur Suhu Tubuh Berbasis Arduino Sebagai Alat Deteksi Awal Covid-19","authors":"R. Wulandari","doi":"10.20961/PROSIDINGSNFA.V5I0.46610","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46610","url":null,"abstract":"Abstract: Maintaining health is very important for life especially in the current Covid-19 pandemic. One of the protocols imposed by the government for people who do in public spaces or open facilities is to check body temperature. In this study, arduino-based body temperature gauges were designed to have reminder alarms if the body temperature was above 37.30 and connected to a computer device via bluetooth. This body temperature gauge utilizes the DS18B20 sensor to measure temperature in celsius (0C). Body temperature data is also displayed on the 16x2 (cm) LCD found on the appliance. The test results of body temperature measuring instruments compared to thermo guns and have a deviation range of 1.16% - 2.02%. This body temperature gauge is expected to be installed in public places that need to conduct checks on the people who will be active in the room, the operator can stand at the control table so that it does not come into direct contact with the community.Abstrak: Menjaga kesehatan merupakan hal yang sangat penting bagi kehidupan terutama di masa pandemi Covid- 19 sekarang. Salah satu protokol yang diberlakukan oleh pemerintah bagi masyarakat yang berkegiatan di ruang umum atau fasilitas terbuka adalah memeriksa suhu tubuh. Dalam penelitian ini dibuat rancang bangun alat pengukur suhu tubuh berbasis arduino yang memiliki alarm pengingat jika suhu tubuh berada diatas angka 37.30 dan terhubung ke perangkat komputer melalui bluetooth. Alat pengukur suhu tubuh ini memanfaatkan sensor DS18B20 untuk mengukur suhu dalam satuan celcius (0C). Data suhu tubuh juga ditampilkan pada LCD 16x2 (cm) yang terdapat pada alat. Hasil pengujian alat ukur suhu tubuh dibandingkan dengan thermo gun dan memiliki rentang penyimpangan 1.16% - 2.02%. Alat pengukur suhu tubuh ini diharapkan dapat dipasang di tempat-tempat umum yang membutuhkan untuk melakukan pemeriksaan terhadap masyarakat yanga akan beraktifitas diruangan tersebut, operator dapat berdiri di meja kendali sehingga tidak kontak langsung dengan masyarakat.","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116531701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dampak Seruak Dingin Monsun Dingin Asia Terhadap Variabilitas Hujan Di Jawa","authors":"Taryono Taryono, Fatkhuroyan Fatkhuroyan","doi":"10.20961/PROSIDINGSNFA.V5I0.46614","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46614","url":null,"abstract":"Abstract: Cold surge is a cold air mass flows from Central Asia near Tibetan Plateau through south china sea into western part of Indonesia. The aim of the paper is to investigate the cold surge impacts to rainfall in Java. It clasify the cold surge based on to the strength by calculating data of wind surface from ECMWF ERA-Interim for 30 years.  Then a composite rainfall and wind analysis was carried out on the impact of cold surge. The analysis shows that weak cold surge had impact on the decrease of about 15% of rainfall in Java which associated with Borneo Vortex. While the strong cold surge had an impact on the increase of about 43% of rainfall in Java.Abstrak: Seruak Dingin (Cold surge) merupakan aliran masa udara dingin yang berasal dari daratan Asia sekitar Tibet melalui Laut Cina Selatan hingga ke wilayah Indonesia bagian barat saat monsoon Asia musim dingin. Tujuan penelitian ialah untuk mengkaji dampak seruak dingin terhadap curah hujan di wilayah Jawa. Metode yang dipakai ialah dengan mengklasifikasikan seruak dingin berdasarkan kekuatannya dengan memperhitungkan data angin permukaan ECMWF ERA_Interim selama 30 tahun sejak 1980-2010. Lalu dilakukan analisi komposit curah hujan dan angin terhadap dampak seruak dingin. Hasil analisa menunjukan saat seruak dingin lemah terjadi penurunan curah hujan sebesar 15% yang berhubungan dengan borneo vortex. Sedangkan saat seruak dingin kuat, berdampak pada kenaikan sekitar 43% curah hujan di Jawa.","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126887812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Kebutuhan Media Pembelajaran Bermuatan Nilai-Nilai Karakter Islami Pada Materi Fisika","authors":"Fitriyani Fitriyani, Hadma Yuliani, Mukhlis Rohmadi","doi":"10.20961/PROSIDINGSNFA.V5I0.46596","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46596","url":null,"abstract":"Abstract:. This research was conducted because of the challenges of 21st century education which requires students to be proficient in learning, digital literate, and have a strong character. The purpose of this study was to conduct a needs analysis for designing physics learning media. Needs analysis is carried out through literature studies and field studies. Study literature by collecting information about instructional media, the importance of character building, and the study of physics material that needs strengthening. Field studies were conducted to determine learning in class. The results of the literature study show that the eXe-Learning application has advantages that can be used in making learning media, character planting is needed according to the curriculum and conditions in the field and it is also known that the material that needs strengthening is Newton's Law of Gravity and Kepler's Law. The results of the analysis of the needs of 22 students of class X IPA obtained that 86.4% did not have handbooks, 68.2% had difficulty learning physics. In fact, 86.4% enjoyed learning with the media. However, based on teacher information shows that the use of media in learning is still rare. And also as many as 90.9% want alternative teaching materials for learning physics and 95.5% agree if there is an electronic module of physics material that contains Islamic character values in it as a learning resource. This was also agreed by the teacher because of the madrasah-based school background. These results indicate that it is necessary to develop instructional media that contains Islamic character values in physics material.Abstrak: Penelitian ini dilakukan karena adanya tantangan pendidikan abad 21 yang menuntut siswa mahir dalam pembelajaran, melek digital, dan memiliki karakter yang kuat. Tujuan penelitian ini adalah melakukan analisis kebutuhan perancangan media pembelajaran fisika. Analisis kebutuhan dilakukan melalui studi literatur dan studi lapangan. Studi literatur dengan mengumpulkan informasi tentang media pembelajaran, pentingnya pembentukan karakter, dan pembelajaran materi fisika yang perlu diperkuat. Studi lapangan dilakukan dengan menganalisis pembelajaran di kelas. Hasil studi pustaka menunjukkan bahwa aplikasi eXe-Learning memiliki kelebihan yaitu dapat digunakan dalam pembuatan media pembelajaran, penanaman karakter dibutuhkan sesuai dengan kurikulum dan kondisi di lapangan serta diketahui juga bahwa materi yang perlu diperkuat adalah Hukum Newton tentang Gravitasi dan Hukum Kepler. Hasil analisis kebutuhan 22 siswa kelas X IPA diperoleh 86,4% tidak memiliki buku pegangan, 68,2% kesulitan belajar fisika, dan 86,4% menikmati pembelajaran dengan media. Namun berdasarkan informasi guru, penggunaan media masih jarang dilakukan. Sebanyak 90,9% menginginkan bahan ajar alternatif untuk pembelajaran fisika dan 95,5% setuju jika terdapat modul elektronik materi fisika yang memuat nilai karakter islami di dalamnya sebagai sumber belaj","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126700116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimalisasi Penggunaan Variasi Filter Pada Pesawat Sinar-X Mobile Guna Mencapai Nilai Entrance Skin Exposure (Ese) Sesuai Organ Pemeriksaan","authors":"Oki Dewi Pamungkas, Utari Utari, Suharyana Suharyana, Riyatun Riyatun, Nining Hargiani","doi":"10.20961/PROSIDINGSNFA.V5I0.46609","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46609","url":null,"abstract":"Abstract: This study was to determine the effect of variations in the type and thickness of the filter on the ESE and HVL values. The use of filters aims to eliminate low energy X-rays, increase effective energy, and reduce dose acceptance to patients. This variation of Al with Cu and Al with Zn filters uses a voltage (70, 80, and 90) kV, 20 mAs, 100 cm SSD, and an irradiation field area of 10 cm x 10 cm. The result of measuring the consistency of the X-ray tube voltage has the largest error value of 4.93%. At a voltage of 90 kV, the measurement results of the variation of Al filter with Cu thickness of 0.2 mm and 0.3 mm and Al filter with Zn thickness of 0.25 mm and 0.50 mm are within the tolerance limits of the thorax examination organ. While the measurement results of the Al filter variants with a Cu thickness of 0.4 mm and an Al filter with a Zn thickness of 0.75 mm are within the tolerance limit of the cranium examination organ. The ESE half value can use 3.03 mm Al, equivalent to 0.135 mm Cu or 0.22 mm Zn.Abstrak: Penelitian ini untuk mengetahui pengaruh variasi jenis dan ketebalan filter terhadap nilai ESE dan HVL. Penggunaan filter bertujuan untuk mengeliminasi sinar-X energi rendah, meningkatkan energi efektif, dan mengurangi penerimaan dosis pada pasien. Variasi filter Al dengan Cu dan Al dengan Zn ini menggunakan tegangan (70, 80, dan 90) kV, 20 mAs, SSD 100 cm, dan luas lapangan penyinaran 10 cm x 10 cm. Hasil pengukuran konsistensi tegangan tabung sinar-X memiliki nilai error terbesar 4,93%. Pada tegangan 90 kV hasil pengukuran variasi filter Al dengan Cu ketebalan 0,2 mm dan 0,3 mm dan filter Al dengan Zn ketebalan 0,25 mm dan 0,50 mm dalam batas toleransi organ pemeriksaan thorax. Sedangkan hasil pengukuran varisi filter Al dengan Cu ketebalan 0,4 mm dan filter Al dengan Zn ketebalan 0,75 mm dalam batas toleransi organ pemeriksaan cranium. Nilai setengah ESE dapat menggunakan 3,03 mm Al, setara dengan 0,135 mm Cu atau 0,22 mm Zn.","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"292 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126019942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Project Based Learning For Brush Less DC Motor","authors":"Ihatiari Prastyaningrum, Pramudya Ardi","doi":"10.20961/PROSIDINGSNFA.V5I0.46591","DOIUrl":"https://doi.org/10.20961/PROSIDINGSNFA.V5I0.46591","url":null,"abstract":"Abstract: The rapid development of technology demands that the younger generation be more creative and innovative to develop themselves. As we know, the current supply of fossil fuels is running low, and of course this is a challenge for the younger generation. Facing this, there are currently many electric-based motorized vehicles being developed which hope that in the future they will be able to develop and have wider utilization. One of the choices is an electric motor. In order to support the development of electric vehicles, the Electrical Engineering Education Study Program of the PGRI Madiun University, is trying to develop an electric motor based on a BLDC motor or Brushless DC Motor. Where understanding the concept first emphasized so that students better understand the work system of this motor BLDC. Through project-based learning, students can understand more quickly about the BLDC motor work system. The results showed an increase in understanding of the concept of the work system of BLDC MOTOR. The boost has a medium N-Gain value. From these results, it can be concluded that through project-based learning for BLDC motors, it can improve understanding of the concept of the BLDC motor work system.Abstrak: Perkembangan teknologi yang semakin pesat menuntut generasi muda juga lebih kreatif dan inovatif untuk mengembangkan dirinya. Seperti telah kita ketahui bahwa saat ini persediaan bahan bakar fosil semakin menipis, dan tentu saja ini menjadi tantangan tersendiri bagi generasi muda. Menghadapi hal ini, maka saat ini banyak dikembangkan kendaraan bermotor  berbasis listrik yang harapan kedepannya nanti akan mampu berkembang dan pemanfaatannya lebih luas. Salah satu yang menjadi pilihan adalah motor  listrik. Guna mendukung perkembangan kendaraan listrik, Program Studi Pendidikan Teknik Elektro Universitas PGRI Madiun, mencoba mengembangkan motor  listrik berbasis BLDC motor atau Brushless DC Motor . Dimana pemahaman konsep terlebih dahulu ditekankan agar mahasiswa lebih memahami sistem kerja dari BLDC motor ini. Melalui pembelajaran berbasis proyek, mahasiswa dapat lebih cepat memahami tentan sistem kerja BLDC motor . Hasil penelitian menunjukkan adanya peningkatan pemahaman konsep mengenai sistem kerja dari BLDC MOTOR . Peningkatan memiliki nilai N-Gain medium. Dari hasil tersebut maka dapat disimpulkan bahwa melalui pembelajaran berbasis proyek untuk BLDC motor mampu meningkatkan pemahaman konsep mengenai sistem kerja BLDC motor.","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129310158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Diameter Leher Resonator Helmholtz Pada Alat Pemanen Energi Akustik (Acoustic Energy Harvester) Terhadap Daya Listrik Yang Dihasilkan","authors":"Yuanita Fara Abdillah, Ikhsan Setiawan, Agung Bambang Setio Utomo","doi":"10.20961/prosidingsnfa.v4i0.35922","DOIUrl":"https://doi.org/10.20961/prosidingsnfa.v4i0.35922","url":null,"abstract":"Abstract: Acoustic energy (sound) that is wasted in environment has potential to be alternative energy to produce electrical energy. This paper presents an experimental study of the effect of Helmholtz resonator neck diameter on the output electric power of an acoustic energy harvester. The cavity of the resonators is a cube-shaped with size of 30 cm ´ 30 cm ´ 30 cm made of acrylic. The resonator neck is cylindrical and has 8 cm length with four diameter variations of 5,2 cm, 6,9 cm, 8,2 cm, and 10,4 cm. A 6-inches subwoofer loudspeaker is used as acoustic transducers that converts sound into electric current. The experiment is performed by giving sound with SPL of 90 dB in the frequency range of (20-150) Hz. The output rms voltages from the loudspeaker are measured at a 5.0 ohm load resistor. It is found that there are always two peaks in the frequency spectrum that provide maximum electric power, namely at 27 Hz and 55 Hz. These peak frequencies do not depend on the neck diameter. On the other hand, the larger the neck diameter, the higher the generated electrical power. The highest rms electric power produced are 3.03 mW and 2.25 mW at the first and second peaks, respectively.Abstrak: Energi akustik (bunyi) yang terbuang di lingkungan memiliki potensi menjadi salah satu energi alternatif untuk menghasilkan energi listrik. Makalah ini memaparkan tentang studi eksperimental pengaruh diameter leher resonator Helmholtz pada alat pemanen energi akustik terhadap daya listrik yang dihasilkan. Rongga resonator Helmholtz berbentuk kubus berukuran 30 cm ´ 30 cm ´ 30 cm terbuat dari akrilik. Leher resonator berbentuk silinder sepanjang 8 cm dengan empat variasi diameter yaitu 5,2 cm, 6,9 cm, 8,2 cm, dan 10,4 cm. Loudspeaker jenis subwoofer dengan diameter nominal 6 inci dipasang disisi belakang rongga resonator digunakan sebagai transduser akustik yang mengubah bunyi menjadi arus listrik. Eksperimen dilakukan dengan memberikan gelombang bunyi dengan SPL (sound pressure level) 90 dB dalam rentang frekuensi (20 - 150) Hz dan mengukur tegangan listrik rms keluaran dari loudspeaker pada resistor beban 5,0 ohm. Diperoleh bahwa selalu terdapat dua puncak spektrum frekuensi dengan daya listrik maksimum, yaitu pada 27 Hz dan 55 Hz. Frekuensi-frekuensi puncak ini tidak bergantung pada diameter leher resonator. Di sisi lain, ditemukan bahwa diameter leher yang semakin besar menghasilkan daya listrik yang semakin besar. Daya listrik rms terbesar yang dihasilkan (pada diameter 10,4 cm) adalah 3,03 mW dan 2,25 mW masing-masing pada puncak pertama dan puncak kedua.","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120957835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IDENTIFIKASI PENGARUH MJO FASE 3 TERHADAP CURAH HUJAN DI PULAU SUMATERA DAN JAWA (STUDI KASUS 14 – 17 OKTOBER 2018)","authors":"Rahpeni Fajarianti, Deffi Munadiyat Putri, P. Winarso","doi":"10.20961/prosidingsnfa.v3i0.28552","DOIUrl":"https://doi.org/10.20961/prosidingsnfa.v3i0.28552","url":null,"abstract":"Abstract:. Madden Julian Oscillation (MJO) is a wave in tropical atmosphere that moving eastward from Indian ocean to Pacific Ocean for a period 30 – 60 days. There are many research that explain when MJO is active in phases 2, 3 and 4 it affects convective activities in the Indonesian Maritime Continent. The purpose of this study is to determine the effect of MJO in phase 3 on temporal rainfall intensity in Sumatra and Java island on 14 – 17 October 2018. This study uses the descriptive analysis method using parameter such as Outgoing Longwave Radiation (OLR) and Phase MJO diagram from Bureau of Meteorology (BOM), Sea Surface Temperature (SST) and vertical velocity data from the National Oceanic and Atmospheric Administration (NOAA) and also raw data of HCAI Himawari-8 satellite to monitor cloud formation on Sumatra and Java island and Global Precipitation Measurement (GPM) data obtained from the Meteorology, Climatology and Geophysics Agency (BMKG) to determine its rainfall distribution on 14 – 17 October 2018. The active MJO in phase 3 causing an increase in convective activity on the Sumatra. The SST value of 29.50 – 300 Celcius supports the occurrence of sufficient evaporation to produce convective clouds with a vertical velocity of less than -0.12 Pa/s (strong updraft) so as to form Cumulonimbus clouds which cause heavy rain intensity which can cause floods. However, in Java Island the influence of MJO was less significant due to the influence of relatively lower sea surface temperatures in the south of Java island so that it is not strong enough to form convective clouds that produce heavy rain.Abstrak: Madden Julian Oscillation (MJO) merupakan gelombang di kawasan tropis yang menjalar dari Barat (Samudera Hindia) ke timur (Samudera Pasifik) dengan periode 30 – 60 hari. Banyak penelitian menjelaskan bahwa pada saat MJO aktif pada fase 2, 3 dan 4 berpengaruh terhadap giatnya aktivitas konvektif di Benua Maritim Indonesia. Penelitian ini bertujuan untuk mengetahui pengaruh MJO di fase 3 terhadap intensitas curah hujan secara temporal di wilayah Pulau Sumatra dan Pulau Jawa pada 14 – 17 Oktober 2018. Penelitian ini menggunakan metode analisis deskriptif dengan parameter antara lain : Outgoing Longwave Radiation (OLR) dan diagram fase MJO yang diambil dari Bureau of Meteorology (BOM), Sea Surface Temperature (SST) dan kecepatan vertikal yang diambil dari National Oceanic and Atmospheric Administration (NOAA) serta raw data HCAI satelit Himawari-8 untuk memonitoring pembentukan awan di Pulau Sumatera dan Jawa dan data Global Precipitation Measurement (GPM) yang didapatkan dari Badan Meteorologi, Klimatologi dan Geofisika (BMKG) untuk mengetahui distribusi curah hujannya pada 14 – 17 Oktober 2018. Aktifnya MJO pada fase 3 menyebabkan peningkatan aktivitas konvektif di Pulau Sumatera. Nilai SST sebesar 29.50 – 300 Celcius mendukung terjadinya penguapan yang cukup untuk menghasilkan awan konvektif dengan kecepatan vertikal kurang dari -0.12 Pa/s (","PeriodicalId":117408,"journal":{"name":"Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115040070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}