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All Journal BERKALA FISIKA Jurnal Harpodon Borneo Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JURNAL FISIKA Sainteknol : Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknologi Informasi dan Ilmu Komputer International Journal of Advances in Intelligent Informatics Jurnal Pendidikan Biologi Indonesia Jurnal Imejing Diagnostik Civis: Jurnal Ilmiah Ilmu Sosial dan Pendidikan ETNOSIA : Jurnal Etnografi Indonesia Chemistry in Education JOIV : International Journal on Informatics Visualization Jati: Jurnal Akuntansi Terapan Indonesia Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Organisasi Dan Manajemen Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan Kebutuhan Khusus ILKOM Jurnal Ilmiah Prosiding Seminar Nasional Sains dan Teknologi Terapan IKRA-ITH ABDIMAS Jurnal Ilmu Kepolisian PENA AKUATIKA : JURNAL ILMIAH PERIKANAN DAN KELAUTAN International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Jurnal Penelitian Fisika dan Terapannya (JUPITER) Dinasti International Journal of Economics, Finance & Accounting (DIJEFA) Best : Journal of Applied Electrical, Science and Technology Indonesian Journal of Social Science Research Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo) JURNAL PENDIDIKAN INDONESIA: Teori, Penelitian, dan Inovasi Indonesian Journal of Multidisciplinary Science Jurnal Iman dan Spiritualitas Sapientia Humana : Jurnal Sosial Humaniora Journal of Artificial Intelligence and Digital Business Room of Civil Society Development Jurnal Ilmiah Ekonomi, Manajemen dan Syariah Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Ramatekno Jurnal Penelitian Pendidikan Indonesia International Journal of Artificial Intelligence in Medical Issues Journal Of Public Policy (Social Politics) Sciences (Polisci) PASAI : Jurnal Pengabdian kepada Masyarakat Room of Civil Social Development SIMPUL: Jurnal Ilmu Politik dan Hukum Jurnal Ilmu Kesehatan Indonesian Journal of Aerospace

Rudi Setiawan

Magister Ilmu Fisika,Universitas Diponegoro

Author-ID : 377110

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry 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 Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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DEVELOPMENT OF IoT SYSTEMS FOR FIRE DETECTION TOOLS USING ESP 8266 AND TELEGRAM NOTIFICATIONS Kurnia, Deni; Setiawan, Rudi; Janizal
JURNAL RAMATEKNO Vol 3 No 2 (2023): Ramatekno
Publisher : LPPM Politeknik Enjinering Indorama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61713/jrt.v3i2.98

This research describes the process of making and developing a fire detection system using IoTtechnology. The background for making this tool is because the existing tool at the research site, namely at the Captive Power Plant of PT Indorama, is still a conventional device with an ordinary smoke sensor system and notifications only via a buzzer. This system combines telegram notification mode. Using three sensors namely temperature sensor, smoke sensor and fire sensor is a very effective combination as an early warning system. The test results show that the system provides notification via telegram when there is a significant increase in temperature above 31oC. The smoke sensor is tested with three smoke conditions, namely thin, medium and thick with a value of 704-803 ppm. The sensor response is less than 2 seconds, notification instructions to telegrams are sent directly without any delay. In the fire sensor test, six test conditions were carried out with variations in distance ranging from 10-100 cm, the sensor response was under 2 seconds, immediately activated the buzzer and a telegram notification was sent. The results of this study contribute to the hope that with the three sensor combinations the security layer will be more optimal and in real terms it can be used in industrial buildings which are prone to fire.

PENGARUH PERUBAHAN FREKUENSI TERHADAP KINERJA MOTOR COAL FEEDER DI CAPTIVE POWER PLANT Supriyanto, Adolf Asih; Wibowo, Nanang Roni; Setiawan, Rudi
JURNAL RAMATEKNO Vol 3 No 2 (2023): Ramatekno
Publisher : LPPM Politeknik Enjinering Indorama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61713/jrt.v3i2.100

Motor induksi termasuk jenis motor AC yang bekerja akibat adanya arus stator yang terinduksi sebagai akibat adanya perbedaan relatif antara putaran rotor dengan medan putar yang dihasilkan arus stator. Motor induksi dinamakan motor tak serempak (asynchrone) karena putaran poros motor tidak sama dengan putaran medan fluks magnet stator. Motor coal feeder merupakan motor induksi tiga phasa yang pengaturan kecepatannya diatur oleh Variable Speed Drive (VSD). Motor coal feeder berfungsi sebagai media penyalur bahan bakar batubara menujuruangbakardiboiler yang bertujuan untuk proses pembakaran dalam memanaskan air pada dinding pipa yang akan dijadikan uap penggerak turbin. Sebelum mensuplai batubara terlebih dahulu memperhatikan jumlah batubara yang masuk ke coal feeder, karena akan mempengaruhi aliran batubara dan kinerja motor. Semakin banyak batubara yang masuk ke coal feeder maka akansemakin besar aliran batubara, sama halnya dengan tingginya kecepatan motor akanmemperbesar aliran batubara yang masuk ke furnace. Dari hasil penelitian diperoleh kecepatan motor coal feeder pada frekuensi 4Hz sebesar 115,2 rpm dengan, coal flow 17,16 t/h dan efisiensi 32,76 %.

Rekontruksi Pembelajaran Komunikasi Digital Modulasi QPSK dengan Rewiring Modicom 5/1 dan Modicom 5/2 Pambudi, Wisnu Setyo; Setiawan, Rudi
Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (SENASTINDO) Vol. 4 (2022): Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo)
Publisher : Akademi Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54706/senastindo.v4.2022.171

Communication systems are very decisive in modern warfare, the use of long-range weapons without crew requires a long-distance communication system using digital modulation communication. One of the basics of digital modulation communication that is important is QPSK modulation, so the Department of Electronics develops learning by conducting research on QPSK modulation and demodulation by conducting research on series block systems built on Modicom 5/1 and Modicom 5/2. Modicom 5/1 consists of blocks, namely the separation of serial data into MSB and LSB data, Unipolar to bipolar converters, Modulator I and Modulator Q and the summation of the Op-Amp. The Modicom 5/2 consists of a QPSK detector, a two-order filter, a comparator and a decoder differential. The results of the study prove that serial data from modicom 3/1 is in the form of serial data (D0,D1,D2,D3,D4,D5) separated by MSB data separator blocks (D0,D2,D4) and LSB (D1,D3,D5), serial data MSB and LSB (unipolar data standard (0V/+5V)) are converted to bipolar standard digital data (-4V/+4V) by a unipolar to bipolar converter block system. Balance Modulator (IC 1496) with MSB signal input ( I ) on modulator 1 carrier frequency of 960kHz (∟0º) and 960 kHz (∟-180º) on modulator 2 is LSB (Q) will output data in the form of an analog sine signal with a frequency of 960 KHz with different phase according to carrier signal '0'=∟-90º or '1'=∟-270 . the sum of the Module I and Q signal modules into phase angles of 00(45º),10(135º),11(225º), 01 (315º). The QPSK detector by means of the information signal is generated 4 times, the phase is detected (IC PLL) then divided by 4 , phase difference angle as control switch signal I and Q to get signal I and signal Q . The I and Q signals are filtered by fourth order butterworth then the I and Q signal data as comparator inputs to get a logic 0 or 1. Data I and O as logic data (0/1) as MSB and LSB data are combined again into discrete serial data with blocks differential decoder by using the PISO register (parallel input serial output) using IC 17HC175.

ANALISIS BAURAN PEMASARAN TERHADAP KEPUTUSAN PEMBELIAN DI PASAR MODERN ALFAMART KOTA BIMA Setiawan, Rudi; Ernawati, Sri
Jurnal Ilmiah Ekonomi, Manajemen dan Syariah Vol. 2 No. 2 (2023): JIEMAS: Jurnal Ilmiah Ekonomi, Manajemen dan Syariah
Publisher : STAI Darul Qalam Tangerang

In the current era of globalization, there are many places to sell various products, plus the presence of minimarkets with the name Alfamart has mushroomed in Indonesia. This study aims to determine the effect of the marketing mix on purchasing decisions at Alfamart Kota Bima. This type of research is associative with data collection techniques using observation, literature study and questionnaires with a Likert scale. The total population in this study were all consumers who had bought at Alfamart with a sample of 50 people. The data analysis technique used validity test, reliability test, simple regression, determination test, correlation test and t test. The results of this study where it can be stated that the marketing mix has a positive and significant effect on purchasing decisions at Alfamart Bima City

Application of Pyramidal Decomposition to Improve Digital Radiography Image Quality Setiawan, Rudi; Susilo, Susilo
Jurnal Fisika Vol 13, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v13i2.47852

As an effort to create innovation in the world of radiography, it is necessary to develop technology in software. This effort is to improve image quality by using pyramidal decomposition. This digital image decomposition is referred to as pyramid decomposition. The original image is decomposed into several frequency bands, repeatedly divided into high-pass components and low-pass components. The high-pass component is set aside while the low-pass image is subjected to subsequent division. This creates a kind of "3D" stack of image layers. Each layer is at a lower frequency and therefore fuzzier. This processing was pioneered by Philips Healthcare as UNIK (Unified Image Quality Enhancement), and by Agfa as MUSICA (Multi-Scale Image Contrast Amplification) with various innovations. The test image uses digital radiography images resulting from innovation from 14bit RAW digital conversion into JPG format. Image quality is calculated using Mean Square Error (MSE) and Peak Signal Noise Ratio (PSNR). The pyramidal decomposition application succeeded in improving the quality of digital radiography images with an average MSE reduction value of 0.018 and an average PSNR increase of 22.114 dB. Visually, there is a constant increase in contrast and detail, so it can be applied in the medical field.

Analysis of Twitter User Sentiment on Presidential Candidate Anies Baswedan Using Naïve Bayes Algorithm Setiawan, Rudi; Dewi, Fitria
ILKOM Jurnal Ilmiah Vol 15, No 3 (2023)
Publisher : Prodi Teknik Informatika FIK Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/ilkom.v15i3.1775.473-487

Indonesian hold presidential election in 2024. One of the most discussed topics by public is the presidential candidates. The discussion about the presidential candidate certainly reaped various kinds of responses from public, ranging from support to statements of disapproval. This research was limited to the candidacy of Anies Baswedan as a presidential candidate before a vice president candidate as his pair was selected. The purpose of this study is to conduct a sentiment analysis of public responses regarding Indonesia 2024 presidential candidate Anies Baswedan using tweets data from October 2022 to January 2023 using the naïve bayes classifier algorithm. This is expected to provide an overview of the public opinions on Twitter. Three test models were carried out with differences in the division of the amount of training data and test data, respectively 60%:40%, 70%:30% and 80%:20%. The test results showed the highest accuracy level was obtained by the 3rd model using training and testing data of 80%:20% with an accuracy value of 76.21%. Further research is recommended to conduct sentiment analysis on the pairs of Presidential and Vice-Presidential candidates who have been officially registered with the General Election Commission using various other classification algorithms.

Penerapan Unsur Tanah Jarang pada Struktur Rangka Persenjataan Militer (Kasus Struktur Rangka F-35 Lightning II) Setiawan, Rudi; Aritonang, Sovian; Andreas N, R Djoko; Juhana, Riyadi
Rekayasa Material, Manufaktur dan Energi Vol 6, No 1: Maret 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i1.12627

The rare earth element (REE) is not a free metal element or an individual pure mineral, generally in the form of compounds. To obtain rare earth element is done by extraction that requires modern technology with expensive costs. The use of REE is very important for the development of industry and modern technology. Seeing the potential and rapidly developing technology, the Rare Earth Metal in developed countries is currently being used as a mixture of materials in the manufacture of weapons. This journal will discuss the use of rare earth element for the F-35 Lightning II fighter. REE used in F-35 is a mixture for composite Graphite/Epoxy and Graphite/Bismaleimide, as elements Rhenium, Samarium, and Tantalum. This compost is used on the fuselage structure as an example for the Fuselage Center. The results of these alloys can increase aircraft performance, which is resistant to high temperatures, resistant to high pressure, and cannot be detected by radar (stealth). But also before being applied it needs accurate analysis of the negative impacts if the composites are implemented

Pemanfaatan Logam Tembaga dan Seng Sebagai Sel Volta Dalam Media Limbah Buah-Buahan. setiawan, rudi; Eddy, Syaiful; Arif Setiawan , Andi
Jurnal Penelitian Fisika dan Terapannya (JUPITER) Vol. 5 No. 1 (2023): Jurnal Penelitian Fisika dan Terapannya (JUPITER)
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/jupiter.v5i1.9128

Buah-buahan yang sering dibuang akan menghasilkan limbah, akan tetapi lebih dari itu limbah khususnya buah-buahan memiliki nilai ekonomis bagi yang memanfaatkannya, salah satunya adalah sebagai energi alternatif karena beberapa buah mengandung keasaman yang berbeda-beda. Tujuan dari penelitian ini untuk mengkaji beda potensial dan arus yang dihasilkan, maka dari itu peneliti memandang perlu untuk melakukan penelitian seberapa besar beda potensial dan arus listrik yang dihasilkan limbah buah-buahan. Metode yang digunakan yaitu survey di lokasi pasar Induk Jakabaring Kota Palembang, berupa pengamatan langsung di lapangan disertai pengambilan sampel. Tahapan selanjutnya dilakukan percobaan (eksperimen) di Laboraturium. Sampel limbah buah-buahan ini terdiri dari buah nanas, tomat, jeruk dan pisang, di blander dan selanjutnya sampel diambil ekstrak buah di diamkan tersebut dimasukan kedua elektroda Cu dan Zn untuk di ukur beda potensial dan arus listrik berdasarkan 6 kali pengulangan dan pengulangan pengukuran pada masing-masing ekstak limbah buah berjangka waktu 5 menit. Hasil penelitian ini adalah Urutan buah yang menghasilkan beda potensial dan arus listrik dari yang paling tinggi yaitu tomat (0,99 v ; 1,41 mA), jeruk (0,97 v ; 1,04 mA), nanas (0,97 v ; 1,01 mA), dan pisang (0,96 v ; 0,43 mA).

Design of An Active Power Ankle-Foot Orthosis with Myoelectric Control for Drop-Foot Rehabilitation Setiawan, Rudi; Sabar, Sabar; Madi, Madi
International Journal of Electrical, Energy and Power System Engineering Vol. 4 No. 2 (2021): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.4.2.139-144

Drop-foot is an inability to lift the foot when walking due to muscle weakness or paralysis. One of the common rehabilitation aids for stroke sufferers with drop-foot is Ankle Foot Orthosis (AFO). This tool serves as a stabilizer for road pattern balance. However, most of the AFO used is passive, so it doesn't help users run properly. Therefore, an active AFO system has been designed as a rehabilitation aid. This AFO is designed with motor control from myoelectric feedback signal (EMG) and also a semi-dynamic ankle joint so that it is more flexible to help the user when stepping. The AFO movement set of to the foot's position in Dorsi and Plantarflexion conditions based on the EMG parameter received by the control unit. Then, the angle sensor standardizes the user's ankle position so that the foot fits the states that have set. This design uses the fuzzy logic method, which functions to control the rotation of the servo motor. The interface system is for monitoring parameters. In this design, pressure sensors (force), EMG, and angle sensors transmitted wirelessly to a computer are used for data analysis under the needs of real-time statistical data processing.

Sistem Deteksi Kadar Alkohol Pada Pengemudi Bus Menggunakan Sensor TGS2620 Berbasis Internet Of Things Setiawan, Rudi; Sujono, Hari Agus; Fahruzi, Akhmad; Alfianto, Enggar
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2023: Transformasi Riset, Inovasi dan Kreativitas Menuju Smart Technology dan Smart Energy
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Salah satu penyebab kecelakaan bus adalah pengemudi yang mabuk. Dari beberapa kasus tersebut disebabkan oleh tidak adanya sistem yang dapat mendeteksi bahwa pengemudi dalam keadaan mabuk atau tidak. Sehingga dari permasalahan tersebut dibuatlah sistem deteksi kadar alkohol pada pengemudi bus menggunakan sensor TGS2620 berbasis IOT (Internet of Things). Tujuan dari penelitian ini yaitu untuk merancang dan membuat sistem deteksi kadar alkohol pada pengemudi bus menggunakan sensor TGS2620 bebasis Internet of Things, membuat sistem Internet of Things melalui platfom android untuk mengirim data kondisi pengemudi berupa notifikasi ke kantor pusat dan driver, dan mengetahui tingkat akurasi dan kepresisisan pembacaan sensor gas TGS2620 untuk mendeteksi kadar alkohol pada pengemudi bus. Metode dalam penelitian ini yaitu mendeteksi kadar alkohol pada nafas pengemudi bus sebelum melakukan keberangkatan. Untuk komponen yang digunakan pada sistem ini adalah ESP32 sebaga imicrocontrollerkemudian menggunakan sensor TGS2620 sebagai deteksi kadar alkohol. Alat tersebut akan mendeteksi apakah pengemudi dalam keadaan mabuk atau tidak. Hasil deteksi tersebut ditampilkan pada LCD dan dikirimkan ke aplikasi smartphone sebagai laporan. Jika pengemudi dalam keadaan mabuk maka buzzer pada alat tersebut aktif dan tertera notifikasi pada LCD bahwa pengemudi dalam keadaan mabuk.Pengujian akurasi karakteristik yang dilakukan dalam penelitian ini meliputi Pengujian Buzzer, Pengujian LCD (Liquid Crystal Display), Pengujian NodeMCU ESP32, Program IDE Arduino, dan Pengujian Sensor TGS2620. Sehingga didapatkan hasil yaitu sensor 1 memiliki akurasi sebesar 91,3% dan rata rata presentasi error sebesar 8,7%, sedangkan sensor 2 memiliki akurasi sebesar 88,9% dan rata-rata presentasi error sebesar 11,1%, dimana hasil tersebut dapat disimpulkan bahwa sensor TGS2620 dapat berfungsi dengan baik sesuai perencaan awal, karena Sensor TGS2620 sangat sensitif dalam mendeteksi gas alkohol yang mudah menguap.

Co-Authors Adi Pamungkas Aisyah Rahmawati Alamri, Sazili Mustofa Amani, Risca Andreas N, R Djoko Anggraeni, Ellya ANGGRAENI, RENI Ani Haryani, Ani Annas Alkhowarizmi Aprianti, Penti Arif Setiawan , Andi Aris Wahyu Murdiyanto Aritonang, Sovian Aryani, Wiwik Dyah Asep Ahmad Sopandi Asnani Asnani Aulia Safitri, Aulia Azzahra, Haliza Badriatin, Tine Bartolomeus Samho Bartoven Vivit Nurdin Beni, Muhammad Bernard Dehaan, Yeovan Naufal Chatarina Umbul Wahyuni Cristofer, Fernando Daulay, Okky Freeza Dede Hertina Dedet Erawati Denis Pramudia Putra Dewi Utami Dewi, Fitria Dewi, Manda Iska Eddy, Syaiful Elsa Efrina Elvi Yenie, Elvi Enggar Alfianto Erdyvania Apritrycia Etty Puji Lestari Fahruzi, Akhmad Faisal, Amir Fatmawati, Fatmawati Gifari, Muhammad W. Grahita Kusumastuti, Grahita Hadia Sukma, Yoga Hakim Santoso, Abdul Hari Agus Sujono Heri Sutanto Ida Zahrina Iskandar Mirza Janizal Jayawarsa, A.A. Ketut Juhana, Riyadi Kadir Parewe, Andi Maulidinnawati Abdul Laksono, Muharram Budi Latipah, Asslia Johar Madi, Madi Mahdi, Arisul Margianto, Tofik Marlina Marlina Mashud, Mustain Mega Iswari Miati, Iis Muhammad Nur Ihsan, Muhammad Nur Muslimin, Ahmad Novi Mustagfirin Mustagfirin Nabila, Laila Nova Resfita Nugroho, Widianto Nur Aida Wassi`atu Sakdiah Nurwijayanti Oscar Yasunari Pambudi, Wisnu Setyo Pingki Novita Berliana Priyanto, Rachmat Puji Astuti, Nur Rochmah Dyah Putra, Fajri Profesio Putri Kholida Putri, Sherlyana Hardiyandeffi Rachmawati, Nurul Aisyah Raditia Fath Kharomatudzaky Rahmahtrisilvia Rahmahtrisilvia Rahman, Titik Khawa Abdul Rahman, Yusuf A. Ramayanti, Rizka Resfita, Nova Rio Febrianto Arifendi, Rio Febrianto Riyadl, Ahmad Rumondang, Rumondang Saadah, Neng Siti Nur Sabar Sabar Sdarmin Sudarmin, Sdarmin Sekar Ambarsari Sujatmiko Putri Sepiah Dwi Cahyani Setiawan, Agung W. Setiawan, Cahya Heru Siagian, Apriansyah Dharmawan Siburian, Marsudi siregar, umaiyu Siti Khumayah Sparingga, Daniel Sri Ernawati Sri Sudiarti Sudrajat, Deni Sumarmi Sunarno Supriyadi Supriyadi Supriyanto, Adolf Asih Susilo Susilo Sutikno Sutikno Syahputra, Ahmad Reynaldi Thahyo Subroto, Thahyo Triharjanto, Robertus Heru Umar Al Faruq Wibowo, Nanang Roni Widodo Y. H. Yogaswara, Y. H. YOSAN, R BAGUS Zaenal Arifin Zulmiyetri Zulmiyetri

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