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All Journal Riau Journal of Computer Science Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Brilliance: Research of Artificial Intelligence Jurnal Sains Informatika Terapan (JSIT) Counseling As Syamil Jurnal Sains Materi Indonesia Teknofile, Jurnal Sistem Informasi
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PENERAPAN ALAT KENDALI KIPAS ANGIN MENGGUNAKAN MICROCONTROLLER ARDUINO MEGA 2560 DAN SENSOR DHT22 BERBASIS ANDROID Ordila, Rian; Yulanda; Putra; Irawan, Yuda
Riau Journal Of Computer Science Vol. 6 No. 2 (2020): Riau Journal of Computer Science
Publisher : Riau Journal Of Computer Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1375.916 KB)

Abstract

The control of the fan in the classrooms of the Ekatama Tourism Pekanbaru SMKS still uses a rope as a speed controller or manual. To simplify the control of fans in the classroom, a Fan Control Device Using an Arduino Mega 2560 Microcontroller and an Android-Based DHT22 Sensor. The whole tool is divided into several parts which consist of Smartphone, Arduio Mega 2560 Microcontroller, DHT22 Sensor, Bluetooth HC-06, 4ch Relay Module, LCD 1602, 1K Resistor, XL4005 Step Down, Power Supply 12V 3A, LED Diffused, Push Button, and DC fan. This tool works when a Bluetooth Smartphone connects to Bluetooth HC-06, from Bluetooth HC-06 then to a microcontroller to process commands, from a microcontroller then to a Relay module that works as a substitute for a switch that functions to activate and deactivate the fan according to the desired speed. The application of this tool can also work with manual or automatic functions. The results showed that applications on Smartphones can communicate with Arduino Mega 2560 with a distance of 25 meters if there is no barrier, and 15 meters if there is a barrier.
Perancangan Aplikasi Sistem E-Library Pada Smas Andika Menggunakan Bahasa Pemograman Php Dan Mysql Syatriadi; Putra; Hidayat
Jurnal Sains Informatika Terapan Vol. 2 No. 1 (2023): Jurnal Sains Informatika Terapan (Februari, 2023)
Publisher : Riset Sinergi Indonesia (RISINDO)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62357/jsit.v2i1.244

Abstract

The design of the E-Library at SMAS ANDIKA is to make it easier for students to carry out the process of borrowing books and printing their own proof of book borrowing cards, as well as students being able to download the lesson syllabus individually. In this case, students no longer need to carry a library membership card because every student who first carries out the process of borrowing books will be recorded by the library staff regarding the student's personal data to be entered and stored in the system database so that it can provide relief for the library staff. because every time there is a loan transaction by the same student, the admin no longer needs to input the student's data a second time. Another convenience for admins is managing book borrowing reports, this system automatically records all book borrowing transactions, whether books are being borrowed or books are being returned based on day, month and year.
Pengaruh perceived value, kualitas pelayanan dan kepuasan konsumen terhadap minat beli ulang pada Distro Agung Sungai Penuh Efdison, Zefri; Yelnim, Yelnim; Yadewani, Dorris; Erni Febrina Harahap; Medi.yaya2017@gmail.com; Putra
Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan Vol. 4 No. 8 (2022): Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan
Publisher : Departement Of Accounting, Indonesian Cooperative Institute, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.031 KB) | DOI: 10.32670/fairvalue.v4i8.1464

Abstract

The purpose of this study was to determine the effect of perceived value, service qualityand consumer satisfaction on repurchase interest at the Agung Sungai Penuh distribution.In this study due to the large and unknown population. The samples taken were consumerswho made purchases at the Great Distro of Sungai Penuh City during the research periodor the minimum limit of 80 was obtained from 20 x the number of variables in this study.The sampling method in this study is the accidental sampling method, namely the samplingis based on the fact that they happen to appear in the research object. The results showedthat Perceived Value had a significant effect on repurchase interest. service quality has asignificant effect on repurchase intention. consumer satisfaction has a significant effect onrepurchase intention. The magnitude of the influence of 81.8% between Perceived Value(X1), service quality (X2) and consumer satisfaction (X3) on repurchase interest at theGreat Distro of Sungai Penuh City, while 18.2% can be explained by other reasons outsidethe study. this.
An Enhanced Nickel Recovery from Mixed Hydroxide Precipitate Through Selective Leaching with KMnO4 Oxidant Gumelar, Muhammad Dikdik; Rahayu; Saputra; Agustanhakri; Husin; Andrameda; Taqwatomo; Putra; Indrijarso; Saudi; Indriasari; Arfiana; Yuliani; Mumtaz; Mirahati
Jurnal Sains Materi Indonesia Vol. 26 No. 1 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.3136

Abstract

Mixed Hydroxide Precipitate (MHP), a metal precipitate with the dominant nickel and cobalt content in hydroxide compounds, can be leached as a lithium battery precursor. In this study, KMnO4 was used as an oxidant agent to increase the solubility of Ni and Co. The variation of the sulfuric acid concentration (0.5 - 1.5 M) as a leachate reagent, the concentration of KMnO4 (2.5 - 7.5 g/L), and the selective leaching temperature (60 - 80°C) were investigated. Solvent extraction using CYANEX 272 and D2EHPA was performed to separate the Ni, Co, and Mn. Atomic Absorption Spectrometry (AAS), Inductively coupled plasma mass (ICP-OES), and X-ray Fluorescence (XRF) were used to analyze the chemical compositions. At the same time, crystallographic analysis was observed with X-Ray Diffraction. It was observed that potassium permanganate increased the dissolution of Ni and Co to 91.3% and 85.4% but decreased the dissolution of Mn (37.53%) under the following conditions: 1.75 M sulfuric acid, 7.5 g/L potassium permanganate, and 60°C temperature. High purity of nickel crystal (99.64%) was observed with spontaneous nucleation due to the supersaturated nickel solution after solvent extraction with CYANEX 272. Thus, using permanganate ion as selective leaching of Ni and Co from Mn is promising.
Catatan Kelam dari Rentetan Kasus Tawuran antar Remaja di Kota Padang: Melihat Eksistensi Layanan Bimbingan Konseling dalam Upaya Penyelesaian Putra; Syaiful Adnan; Maturidi
Counseling As Syamil Jurnal Ilmiah Bimbingan Konseling Islam Vol. 5 No. 1 (2025)
Publisher : Program Studi Bimbingan dan Konseling Islam (BKI) Fakultas Ushuluddin, Adab dan Dakwah (FUAD) Institut Agama Islam Negeri (IAIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24260/assyamil.v5i1.5060

Abstract

This paper was born from anxiety over the rampant brawls between teenagers in Padang City. This has a significant impact on all aspects of human life, from fear and anxiety when traveling at night, parental anxiety about their children's social interactions, deviant behavior, and other negative impacts. The rampant brawls add to the dark record of crime in Padang City, requiring serious attention from all levels of society, especially the authorities, to take decisive action to eradicate this brawl problem. The author conducted this paper using a library research method, where in seeking and refining the answers to this research through accurate sources, including books, journal articles, and other valid sources. The results of this study found that: first, the problem of brawls has occurred from previous years, where in this paper the author began to compile data from 2021-2025, second, brawls have a very serious impact, meaning this problem really falls into the category of deviation and crime, third, several services in the science of guidance and counseling are able to contribute and strive for how this problem of brawls can be prevented and eradicated which in this case can be practiced directly by certain parties, such as BK teachers in schools, social volunteers and clergy in community institutions. It is hoped that the problem of brawls between teenagers in Padang City can be resolved even though faced with various obstacles and barriers
2.3 Ghz Lte Antenna Design Using Triangle Geometry and Array Structure Septima, Uzma; Yulindon; Setiawan, Herry; Nasrul; Putra
Brilliance: Research of Artificial Intelligence Vol. 3 No. 2 (2023): Brilliance: Research of Artificial Intelligence, Article Research November 2023
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v3i2.3035

Abstract

Microstrip antenna is one of the most important devices in telecommunications systems. One example is the design of a microstrip antenna on a long time evolution (LTE) device. Disadvantages of this microstrip antenna include low gain, poor directionality, low efficiency, resistance losses on the feed line and narrow bandwidth. This research will design a triangular patch array microstrip antenna to increase the gain so that it can meet the desired work specifications with a working frequency of 2.300MHz. The antenna is designed using FR-4 Epoxy substrate material with a size of 120 mm x 60 mm, which has a dielectric constant (?r) of 4.3, a loss tangent of 0.035 and a material thickness of 1.6 mm. Antenna designed using CST studio suite software 2018. The results obtained in the working frequency band 2280.4 MHz – 2370.0 Mhz, middle frequency 2332 MHz, return loss – 47.360dB, bandwidth 24.7MHz, VSWR 1.008, gain 4.39dBi, impedance 49.90 , and unidirectional radiation pattern.
SISTEM INFORMASI PEMESANAN PIZZA PADA UMKM GALAXY PIZZA M. Rizqy Pratama; Sisca Amalia Putri; Putra
TEKNOFILE : Jurnal Sistem Informasi Vol. 1 No. 1 (2023): Oktober 2023
Publisher : PT. ZIVANA CENDEKIAWAN BANGSA

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Abstract

Usaha Mikro Kecil dan Menengah (UMKM) adalah usaha yang memiliki peranan penting dalam perekonomian masyarakat, baik dari sisi lapangan kerja yang tercipta maupun dari sisi jumlah usahanya. Galaxy pizza merupakan makanan cepat saji yang banyak disukai diera modern, bisa dinikmati oleh semua kalangan saat ini karena memiliki rasa yang enak dan lezat harganya pun terjangkau. Penelitian ini bertujuan untuk menerapkan system pemesanan online pada galaxy pizza agar pelanggan bisa lebih mudah untuk memesannya. Hasil penelitian ini dilakukan dengan wawancara, observasi dan dokumentasi yang ditunjukan langsung kepada pemilik galaxy pizza.
Analisis dan perancangan sistem informasi pembayaran uang spp pondok darul istiqomah PUTRA
TEKNOFILE : Jurnal Sistem Informasi Vol. 2 No. 4 (2024): April 2024
Publisher : PT. ZIVANA CENDEKIAWAN BANGSA

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Abstract

istem pembayaran SPP Pondok Pesantren Darul Istiqomah saat ini masih menggunakan metode konvensional yaitu pencatatan manual menggunakan kartu SPP dan pembayaran tunai yang mengakibatkan terjadinya kesalahan-kesalahan pencatatan, antrian panjang, serta kesulitan dalam melakukan verifikasi pembayaran. Oleh karena itu, perlu adanya sistem informasi untuk menunjang proses pembayaran SPP secara elektronik dan mudah diakses. Penelitian ini bertujuan untuk merancang sistem informasi pembayaran SPP Pondok Pesantren Darul Istiqomah berbasisweb dengan menggunakan metodologi waterfall dan pemodelan UML. Hasil rancangan menghasilkan antarmuka yang mudah digunakan dan diharapkan dapat meningkatkan kualitas layanan pembayaran SPP secara online
SISTEM INFORMASI PENJUALAN BAKSO DIWARUNG 3 D BERBASIS WEB Putra; Jibril, Muhammad
TEKNOFILE : Jurnal Sistem Informasi Vol. 2 No. 6 (2024): Juni 2024
Publisher : PT. ZIVANA CENDEKIAWAN BANGSA

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Abstract

Sistem Informasi Penjualan Bakso Diwarung 3 D BERBASIS WEB merupakan sebuah sistem yang dibangun untuk membantu proses penjualan di Warung Bakso 3D. Sistem ini dibangun dengan tujuan untuk mempermudah proses penjualan sehingga dapat meningkatkan penjualan produk kepada konsumen pada Warung bakso 3d serta membantu konsumen dalam mendapatkan informasi produk yang dibutuhkan dan memudahkan konsumen dalam melakukan pemesanan tanpa harus datang ke warung bakso 3d. Sistem informasi ini dibangun menggunakan metode waterfall dengan tahapan komunikasi, perencanaan, desain, pengkodean, pengujian, dan implementasi. Model pemodelan yang digunakan adalah Use Case Diagram, Activity Diagram, Class Diagram dan Sequence Diagram. Sistem ini diharapkan dapat memberikan manfaat bagi penjualan warung bakso 3d.
EVALUASI KEAMANAN FITUR TARIK TUNAI CARDLESS PADA APLIKASI BRIMO MENGGUNAKAN PIECES PUTRA
TEKNOFILE : Jurnal Sistem Informasi Vol. 3 No. 6 (2025): Juni 2025
Publisher : PT. ZIVANA CENDEKIAWAN BANGSA

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Abstract

Financial technology (fintech) merupakan perkembangan teknologi yang memudahkan transaksi keuangan di era digital saat ini. Salah satu aplikasi fintech dalam layanan mobile banking yaitu aplikasi BRI Mobile (BRImo). Pengguna aplikasi BRImo masih belum sepenuhnya percaya terhadap keamanan fitur BRImo ketika menarik uang tunai tanpa kartu di Automatic Teller Machine (ATM) karena adanya cybercrime seperti kasus penipuan online. Penelitian ini dilakukan untuk menganalisa keamanan dan kepuasan pengguna terhadap fitur tarik tunai cardless pada aplikasi BRImo. Penelitian ini menggunakan metode framework PIECES dengan lima aspek yaitu Performance, Information and Data, Control and Security, Efficiency, serta Service. Pengumpulan data dilakukan dengan menyebarkan kuesioner dan diolah dengan bantuan software Smart Partial Least Squares (Smart-PLS) versi 3.0. Hasil yang diperoleh dari penelitian menunjukkan bahwa kualitas layanan serta informasi data pada fitur tarik tunai cardless BRImo memiliki pengaruh yang signifikan terhadap Control and Security serta kepuasan pengguna BRImo.
Co-Authors Agustanhakri Andrameda Arfiana Dorris Yadewani Efdison, Zefri Erni Febrina Harahap Gumelar, Muhammad Dikdik Herry Setiawan Hidayat Husin Ikhsan, Suci Asrina Ikhsan Imam Indriasari Indrijarso M. Rizqy Pratama Maturidi Medi.yaya2017@gmail.com Mirahati Mumtaz Nasrul Ordila, Rian Rahayu Saputra Saudi Sisca Amalia Putri Syaiful Adnan Syatriadi Taqwatomo Tyas Dita Uzma Septima Yaser Yelnim, Yelnim Yuda Irawan Yulanda YULIANI Yulindon