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All Journal Voteteknika (Vocational Teknik Elektronika dan Informatika) Jurnal Obsesi: Jurnal Pendidikan Anak Usia Dini JURNAL PENDIDIKAN TAMBUSAI GERVASI: Jurnal Pengabdian kepada Masyarakat Jurnal Teknologi Informasi dan Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Edumaspul: Jurnal Pendidikan
Budayawan, Khairi
Universitas Negeri Padang
Humanities Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Implementasi Steganografi Menggunakan Metode Least Significant Bit (LSB) dalam Pengamanan Informasi pada Citra Digital Fitri Yanti; Khairi Budayawan
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 11, No 1 (2023): Vol. 11, No 1, Maret 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v11i1.121968

Abstract

Penggunaan teknologi sebagai sarana dalam penyampaian informasi menimbulkan dampak terutama dari segi keamanan dan kerahasiaan informasi. Ketika pengirim pesan hanya menunjukan pesan pada orang tertentu dan tidak ingin jika pesan yang dikirimkannya diketahui pihak lain, untuk terhindar dari kebocoran informasi maka dari itu teknik penyembunyian pesan sangat diperlukan. Salah satu metode yang digunakan dalam penyembunyian informasi yaitu metode Least Significant Bit (LSB) pada steganografi. Metode ini merupakan salah satu metode yang sering digunakan, sederhana, cepat dalam proses ekstraksi, serta memiliki daya tampung penyisipan yang cukup besar. Pesan akan disisipkan dengan cara mengganti bit terakhir pada citra penampung dengan bit pesan dengan catatan jumlah bit pada pesan tidak melebihi bit citra penampung. Berdasarkan hasil penelitian citra hasil steganografi jika dibandingkan dengan citra awal sangat sulit dibedakan dengan mata. Sehingga dapat disimpulkan bahwa teknik steganografi LSB yang dikombinasikan dengan vigenere cipher dinilai baik untuk penyembunyian pesan.Kata kunci : Steganografi,  Least Significant Bit (LSB), Vigenere Cipher The use of technology as a means of delivering information has an impact, especially in terms of security and confidentiality of information. When the sender of the message only shows the message to certain people and does not want the message sent to be known to other parties, to avoid information leakage, therefore message hiding techniques are needed. One of the methods used in information hiding is the Least Significant Bit (LSB) method in steganography. This method is one method that is often used, simple, fast in the extraction process, and has a large enough insertion capacity. The message will be inserted by replacing the last bit in the container image with the message bit provided that the number of bits in the message does not exceed the container image bits. Based on the research results, the steganography result image when compared to the initial image is very difficult to distinguish by eye. So it can be concluded that the LSB steganography technique combined with the Vigenere cipher is considered good for message hiding.Keywords: Steganografi,  Least Significant Bit (LSB), Vigenere cipher
Penerapan Algoritma C4.5 untuk Klasifikasi Jurusan Siswa SMA Negeri 6 Padang Dinda Aulia; Khairi Budayawan
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 11, No 4 (2023): Vol. 11, No 4, Desember 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v11i4.123464

Abstract

Penjurusan siswa merupakan upaya untuk membantu siswa dalam memilih jenis program pengajaran yang sesuai dengan minat dan bakat siswa. Penjurusan pada SMA Negeri 6 Padang masih dilakukan secara manual dan kurang efektif menggunakan Microsoft Excel, sehingga beberapa siswa kurang cocok dengan jurusan yang diterimanya. Penelitian ini bertujuan agar siswa bisa mendapatkan jurusan sesuai dengan minat dan kemampuan siswa. Dalam menerapkan hal tersebut dibutuhkan suatu metode yang baik untuk menganalisa kebutuhan dan perancangan aplikasi, sehingga menjadi lebih efektif dan dapat diterapkan sesuai kebutuhan pengguna. Metode yang digunakan adalah metode klasifikasi dengan algoritma decission tree C4.5. Klasifikasi ini menggunakan 5 atribut sebagai atribut kontrol yaitu nilai rata-rata rapor SMP yang meliputi mata pelajaran matematika, IPA, IPS, tes psikotes, dan minat siswa. Berdasarkan pengujian yang dilakukan terhadap siswa tahun ajaran 2021/2022 dan 2022/2023 diperoleh accuracy sebesar 78.38%, precision sebesar 76.92% dan recall sebesar 66.67% dengan 370 sampel data. Dari data tersebut dapat disimpulkan bahwa menentukan penjurusan dengan menggunakan data mining algoritma decission tree C4.5 dapat mempercepat dan akurat dalam pengambilan keputusan penjurusan siswa SMA Negeri 6 Padang.Kata kunci : Penjurusan Siswa, Klasifikasi, Decission Tree C4.5 Student majors are an effort to assist students in choosing the type of teaching program that suits the interests and talents of students. Majors at Padang 6 Public High School are still done manually and are less effective using Microsoft Excel, so that some students are not suitable for the majors they receive. This study aims so that students can get majors in accordance with the interests and abilities of students. In implementing this, a good method is needed to analyze needs and design applications, so that they become more effective and can be implemented according to user needs. The method used is a classification method with the decision tree algorithm C4.5. This classification uses 5 attributes as control attributes, namely the average value of junior high school report cards which include mathematics, science, social studies, psychological tests, and student interest. Based on tests carried out on students for the 2021/2022 and 2022/2023 academic years, an accuracy of 78.38% was obtained, a precision of 76.92% and a recall of 66.67% with 370 data samples. From these data it can be concluded that determining majors using the data mining decision tree algorithm C4.5 can speed up and accurately make major decisions for students of SMA Negeri 6 Padang.Keywords: Student Majors, Classification, Decission Tree C4.5
Pengembangan Aplikasi Mobile Learning Sebagai Media Pembelajaran Interaktif pada Elemen Pemasangan dan Konfigurasi Perangkat Jaringan Sonia Saputri; Hadi Kurnia Saputra; Ahmaddul Hadi; Khairi Budayawan
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 12, No 4 (2024): Vol. 12, No 4, Desember 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v12i4.131202

Abstract

Aplikasi Mobile Learning ini dikembangkan untuk mendukung Kurikulum Merdeka yang berfokus pada pengembangan kompetensi siswa, terutama pada Elemen Pemasangan dan Konfigurasi Perangkat Jaringan. Aplikasi ini dirancang sebagai media pembelajaran interaktif berbasis Android, sehingga lebih efisien dan praktis serta memungkinkan siswa mempelajari materi secara mandiri di luar jam sekolah, baik di rumah maupun di lokasi lainnya. Aplikasi ini diharapkan dapat meningkatkan motivasi dan minat belajar siswa. Pengembangan aplikasi dilakukan dengan metode Multimedia Development Life Cycle (MDLC) yang meliputi enam tahapan: konsep, perancangan desain, pengumpulan materi, pembuatan, pengujian, dan distribusi. Melalui metode MDLC, pengujian dilakukan dengan Alpha Test, yang menunjukkan bahwa aplikasi Mobile Learning ini berfungsi sesuai tujuan dan layak digunakan oleh siswa maupun pengguna umum lainnya.Kata kunci : Mobile Learning, Media Pembelajaran Interaktif, Android, Pemasangan dan Konfigurasi Perangkat Jaringan , MDLC.This Mobile Learning application was developed to support the Independent Curriculum which focuses on developing student competencies, especially in the Network Device Installation and Configuration Elements. This application is designed as an interactive learning media based on Android, so that it is more efficient and practical and allows students to study the material independently outside of school hours, either at home or in other locations. This application is expected to increase students' motivation and interest in learning. Application development is carried out using the Multimedia Development Life Cycle (MDLC) method which includes six stages: concept, design planning, material collection, creation, testing, and distribution. Through the MDLC method, testing is carried out with the Alpha Test , which shows that this Mobile Learning application functions according to its objectives and is suitable for use by students and other general users.Keywords: Mobile Learning, Interactive Learning Media, Android, Network Device Installation and Configuration , MDLC.
Rancang Bangun Sistem Informasi Praktek Kerja Industri (PRAKERIN) Berbasis Web di SMK N 2 Kec. Guguak Rizky Ananda; Yeka Hendriyani; Khairi Budayawan; Delvi Asmara
Voteteknika (Vocational Teknik Elektronika dan Informatika) Vol 12, No 3 (2024): Vol. 12, No 3, September 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/voteteknika.v12i3.128860

Abstract

Penelitian ini bertujuan untuk merancang dan membangun sebuah sistem informasi berbasis web untuk mengelola Praktek Kerja Industri (PRAKERIN) di SMK N 2 Kec. Guguak. Sistem informasi ini dirancang untuk memudahkan proses administrasi, monitoring, dan evaluasi kegiatan prakerin, yang sebelumnya dilakukan secara manual dan memakan waktu. Sistem ini dibangun menggunakan metodologi pengembangan perangkat lunak Waterfall, yang meliputi tahap analisis kebutuhan, desain sistem, implementasi, pengujian, dan pemeliharaan. Teknologi yang digunakan dalam pengembangan sistem ini mencakup bahasa pemrograman PHP, framework Laravel dan database MySQL. Fitur utama yang disediakan oleh sistem ini meliputi pendaftaran online untuk siswa, pengelolaan data dudi tempat prakerin, pelaporan kegiatan siswa, dan evaluasi kinerja. Pengujian sistem menunjukkan bahwa sistem ini mampu meningkatkan efisiensi dan akurasi dalam pengelolaan data prakerin. Diharapkan, dengan adanya sistem informasi berbasis web ini, pengelolaan prakerin di SMK N 2 Kec. Guguak menjadi lebih terstruktur dan efektif.Kata kunci : Sistem Informasi, Praktek Kerja Industri, Laravel, Waterfall, MySQL This research aims to design and develop a web-based information system to manage Industrial Work Practice (PRAKERIN) at SMK N 2 Kec. Guguak. The information system is designed to facilitate the administration, monitoring, and evaluation of prakerin activities, which were previously done manually and time-consuming. This system is developed using the Waterfall software development methodology, which includes the stages of requirements analysis, system design, implementation, testing, and maintenance. The technologies used in the development of this system include PHP programming language, framework Laravel and MySQL database. The main features provided by this system include online registration for students, management of company data for prakerin, reporting of student activities, and performance evaluation. System testing shows that this system can improve efficiency and accuracy in managing prakerin data. It is expected that with this web-based information system, the management of prakerin at SMK N 2 Kec. Guguak will become more structured and effective.Keywords: Information Systems, Industrial Work Practice, Laravel, Waterfall, MySQL
Naïve Bayes and Laplacian Correction Method in Agrarian Application of Vegetable Crops Ibnul Harist; Khairi Budayawan
Edumaspul: Jurnal Pendidikan Vol 7 No 1 (2023): Edumaspul: Jurnal Pendidikan
Publisher : Universitas Muhammadiyah Enrekang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33487/edumaspul.v7i1.6061

Abstract

Indonesia is one of the agricultural countries with the livelihood of the population coming from agro-industrial agriculture. Onfarm agricultural activities, commodities that are widely cultivated are vegetable and fruit crops. The problem that occurs at this time is that physically the vegetables grown experience failure and a decrease in the quality of growth. Socially, many people complain about the quality of vegetables in the market, and this has an impact on the economic decline of farmers. For this reason, this research aims to assist farmers in classifying their land information data. The data classification is a web-based application that will process data in the form of soil type, soil texture, soil pH, temperature, rainfall, soil fertility, soil moisture, altitude, wind speed and sunlight. The data processing uses the Naïve Bayes and Laplacian Correction methods. The trial was conducted in Padang Panjang City, West Sumatra, Indonesia. The results of this research are in the form of a web-based Vegetable Crop Agrarian application. test data used as much as 27 data on the types of vegetables that have the potential to be planted in Padang Panjang City and produce the most recommended crops, namely Radish vegetables. This interprets that the application can be built well and presented as an alternative in helping farmers before planting crops in Indonesia.
Co-Authors Adam Permana Agung Setiawan Ahmaddul Hadi, Ahmaddul Ambiyar, Ambiyar Aulia Gustia Putri Ayu Intan Permana Bayu Ramadhani Fajri Ceci Fenesa Dadi Satria Dedy Irfan Delfi Eliza Delsina Faiza Delva Zuletmei Delvi Asmara Denny Kurniadi Dinda Aulia Efrizon Efrizon Elfi Tasrif Fakhruddin Ahmad Nasution Fisna Khairiah Fitri Yanti Genta Primadana Edde Geovanne Farell Gunadi Widi Nurcahyo Hadi Kurnia Saputra Hafid Armi Helga Yolanda Sardi Ibnul Harist Igor Novid Irfan Fadilah Ismail Ismail Kemal Refta Diska Lise Asnur Muhammad Reski Muhammad Zuharmando Ghaffara Noval Yusri Yandi Nurva Afitri Ovilia Putri Rahmadona Safitri Rifeldo Praguna Rizky Ananda Ronaldo Ronaldo Salsabila, Unik Hanifah Sandi Saputra Simatupang, Wakhinuddin Sonia Saputri Sri Hartati Syafmawandi Irwan Syukri . Syukri Trisna Mulyeni Ulpa Sari Widia Wulandari Yasdinul Huda Yeka Hendriyani Yuhandri Yuhandri, Yuhandri Yuliana Yuliana Zulhendra Zulhendra