Article Per Year (5 Year)
p-Index From 2021 - 2026
4.169
P-Index
This Author published in this journals
All Journal Jurnal Media Infotama International Journal of Artificial Intelligence Research JMM (Jurnal Masyarakat Mandiri) JUTIM (Jurnal Teknik Informatika Musirawas) JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Dehasen Untuk Negeri Jurnal Media Computer Science Jurnal Dehasen Mengabdi Jurnal Komputer, Informasi dan Teknologi
Jumadi, Juju
Program Studi Informatika, Universitas Dehasen Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Other

Published : 27 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 27 Documents
Search

 1   2   3 
Implementasi Metode Complex Proportional Assessment Untuk Pemilihan Reseller Terbaik Pada CV. Harapan Karya Mandiri Bengkulu Olvi Mariani; Juju Jumadi; Abdussalam Al Akbar
Jurnal Media Infotama Vol 21 No 2 (2025): Oktober
Publisher : UNIVED Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jmi.v21i2.9237

Abstract

A reseller is someone who resells products from a supplier to consumers using the reseller's price. The role of resellers cannot be separated from business competition. Resellers are one of the sales methods used by sellers to sell products to customers. For CV. HKM Bengkulu, it is certainly not an easy task to evaluate the performance of resellers achieved by each reseller for the company. Therefore, a computerized decision-making system is needed to assist and simplify the selection of the best reseller. Decision Support System (DSS) research method used in this study is the waterfall method. COPRAS method analysis that will be carried out in this research will describe the stages needed to implement COPRAS in selecting the best reseller at CV. Harapan Karya Mandiri Bengkulu. To perform the calculation process using COPRAS method, the determination of alternatives (An) and criteria, as well as the weights of each criterion, will be conducted. The criteria used are payment type, transaction volume, total spending, quantity of purchases, and subscription duration. The conclusion of this research explains the results of the calculation using COPRAS method, where the reseller with the highest value will occupy the highest ranking followed by the reseller with the lowest value.
Implementasi Kombinasi Hill Cipher Dan Steganografi Least Signifiaction Bit Untuk Evaluasi Kualitas Citra Digital Redo Osi Putra; Juju Jumadi; Ockhy Jey Fhiter. W
Jurnal Media Infotama Vol 22 No 1 (2026): April 2026
Publisher : UNIVED Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jmi.v22i1.9914

Abstract

This study implements a combination of Hill Cipher and Least Significant Bit (LSB) steganography to improve data security and evaluate digital image quality. The Hill Cipher is used to encrypt text with 2×2 key matrix, while LSB inserts the encrypted message into the least significant bits of BMP image. The research method used is applied research with stages of analysis, design, implementation, and testing. The test results show that the integration of these two methods maintains image quality with a low Mean Square Error (MSE) value (0.0001–2.9424) and high Peak Signal-to-Noise Ratio (PSNR) (83.6554–103.4438 dB), indicating visually undetectable changes. The simulations prove the effectiveness of the system in securing data without significant image degradation. The conclusion of this study is that the combination of Hill Cipher and LSB steganography is effective in securing data without significantly compromising image quality. This study also provides an alternative solution for data security by utilizing hybrid cryptography and steganography techniques.
Perancangan Dan Implementasi Sistem Keamanan Jaringan Menggunakan Alienvault Pada SMK N 4 Kota Bengkulu Gita Dahlia Lestari; Juju Jumadi; Ahmad Asyhari
Jurnal Media Infotama Vol 22 No 1 (2026): April 2026
Publisher : UNIVED Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jmi.v22i1.10958

Abstract

This study aims to design and implement a network security system using AlienVault OSSIM at SMK N 4 Kota Bengkulu. The method used in this research is the Network Development Life Cycle (NDLC), which consists of analysis, design, simulation, implementation, monitoring, and management stages. AlienVault is implemented as a standalone operating system running on a virtual machine using VMware and is utilized to perform centralized network monitoring, threat detection, and security management. System testing is conducted using the black box method by simulating attacks such as port scanning and ping flooding. The test results show that AlienVault is capable of detecting network activities, identifying connected devices, and providing alerts for suspicious activities. With the implementation of this system, network security at SMK N 4 Kota Bengkulu becomes more controlled, secure, and supportive of teaching and learning activities.
IMPLEMENTASI KRIPTOGRAFI UNTUK KEAMANAN DATABASE DENGAN MENGGUNAKAN ALGORITMA TWOFISH PADA PUSKESMAS ILIR TALO Edy Rahmat; Juju Jumadi; Deri Lianda
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 7 No. 3 (2024): August 2024
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v7i3.2179

Abstract

Abstract: Security and confidentiality of data or information is one of the important aspects of data or information. The issue of security and confidentiality of computer data is something that is important in this information era, especially for Ilir Talo Health Center. Various ways are done to protect the data or information. One of them is by using cryptography with Twofish algorithm. Cryptography with a block cipher symmetric key with the length of each block is fixed at 128 bits. System implementation using PHP programming language with MySql database. The method used in this research is waterfall, this application is designed using UML (Unified Modeling Language). From the analysis and discussion, it is obtained that the encryption results produced by Twofish utilize bit manipulation techniques, permutation/ whitening boxes. The result of this research is a software application that is useful for maintaining the security of medical record databases using Twofish method. With this application, it can be one of the solutions in securing the database. Keywords: security, cryptography, twofish, medical records. Abstrak: Keamanan dan kerahasiaan data atau informasi merupakan salah satu aspek yang penting dari suatu data atau informasi. Masalah keamanan dan kerahasiaan data komputer merupakan sesuatu yang penting dalam era informasi ini terutama bagi Puskesmas Ilir Talo. Berbagai cara pun dilakukan untuk melindungi data atau informasi tersebut. Salah satunya dengan menggunakan kriptografi dengan algoritma Twofish. kriptografi dengan kunci simetrik cipher blok dengan panjang setiap blok adalah tetap 128 bit. Implementasi sistem menggunakan bahasa pemrograman PHP dengan database MySql. Metode yang digunakan dalam penelitian ini adalah waterfall, aplikasi ini dirancang menggunakan UML (Unified Modelling Language). Dari analisa dan pembahasan diperoleh bahwa hasil enkripsi yang dihasilkan oleh Twofish memanfaatkan teknik pemanipulasian bit, kotak permutasi/pemutihan. Hasil dari penelitian ini adalah sebuah aplikasi perangkat lunak yang berguna untuk menjaga keamanan database rekam medik dengan metode Twofish. Dengan adanya aplikasi ini dapat menjadi salah satu solusi dalam pengamanan database. Kata kunci: keamanan, kriptografi, twofish, rekam medik
IMPLEMENTASI KEAMANAN PADA CITRA DIGITAL MENGGUNAKAN ALGORITMA LEAST CONGRUENTIAL GENERATOR DAN LEAST SIGNIFICANT BIT Natali Mevian Deaz; Juju Jumadi; Abdussalam Al Akbar
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 8 No. 1 (2025): February 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v8i1.2600

Abstract

Abstrak: Steganografi LSB memanfaatkan Least Significant Bit dari data media penampung yang akan disubstitusikan dengan bit dari data pesan yang akan disembunyikan. Konsep LSB yang melakukan substitusi secara linear menyebabkan pesan yang disembunyikan dapat dibaca dengan mudah oleh pihak lain yang tidak berhak. Pengacakan dianggap perlu agar proses substitusi pada media penampung tidak dilakukan secara linear. LCG merupakan metode pembangkit bilangan acak semu yang mana akan menghasilkan bilangan acak menggunakan parameter a, b dan M. Bilangan acak yang dihasilkan relatif baik dengan penggunaan parameter yang tepat. Implementasi LCG dalam membangkitkan lokasi penyisipan secara acak memberikan keamanan tambahan terhadap pesan yang disembunyikan sehingga dapat menutupi kekurangan dari steganografi LSBDari hasil pengujian yang dilakukan dapat disimpulkan bahwa keamanan pesan pada citra digital menggunakan algoritma LCG dan LSB terbukti dapat memberikan keamanan tambahan yang cukup baik dan kualitas dari citra digital tidak berbeda antara menggunakan LCG dan tidak menggunakan LCG karena pada dasarnya penyisipan dilakukan oleh metode LSB sedangkan LCG hanya menentukan posisi pikselnya saja. Kata kunci : Least Significant Bit, Linear Congruential Generator, Citra Digital
IMPLEMENTASI DATA MINING UNTUK PENGELOMPOKKAN WILAYAH PELANGGARAN LALU LINTAS MENGGUNAKAN METODE K-MEANS PADA POLRES BENGKULU Devi Sartika; Juju Jumadi
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 6 No. 2 (2023): June 2023
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v6i2.1341

Abstract

Numbers of congestion and especially traffic violations occur everywhere in the city of Bengkulu, especially at city junctions. The large number of road users who do not comply with traffic regulations properly, every day can increase the rate of accidents and violations of traffic rules in driving in the Bengkulu City area. Due to the large piles of data on traffic violations in the jurisdiction of the Bengkulu City Police, each year only this data is processed into Microsoft Excel, making the data irregular. The process of extracting useful information in order to obtain violation data can be carried out using data mining methods, one of which is k-means clustering The implementation of the system uses the Visual Basic 2010 programming language. From the results of the tests conducted, it can be concluded that the areas with the most violations are the Tanah Patah and Betungan areas, for areas with violations in the moderate group there are Sawah Lebar, Pintu Batu, Padang Harapan, Kebun Tebeng and Simpang Nakau and for areas with low violations are the Swamp Makmur and Sungai Hitam areas
IMPLEMENTASI METODE MONTE CARLO UNTUK MEMPREDIKSI PENDONOR DARAH PADA UNIT TRANFUSI DARAH PALANG MERAH INDONESIA KOTA BENGKULU Eky Heryendy HR; Juju Jumadi; Ricky Zulfiandry
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 6 No. 3 (2023): October 2023
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v6i3.1462

Abstract

Donor darah merupakan proses pengambilan darah secara sukarela dari seorang insan manusia yang kemudian disimpan pada bank darah. Persediaan darah pada Unit Tranfusi Darah (UTD) terkadang tidak menentu stoknya sehingga dibutuhkan persediaan darah yang cukup jika dibutuhkan sewaktu-waktu, namun hal tersebut juga sangat tergantung pada jumlah pendonor yang akan menyumbangkan darahnya. Dengan teknik simulasi diharapkan mampu memprediksi jumlah pendonor yang ada pada UTD PMI Kota Bengkulu. Teknik simulasi dan prediksi yang digunakan adalah monte carlo. Monte Carlo dapat meniru suatu situasi dan keadaan secara sistematis sehingga dapat digunakan untuk proses pengambilan keputusan. Dari hasil dari penelitian yang telah dilakukan dengan menggunakan data dari Januari – Desember 2021 dan Januari – Desember 2022 diperoleh tingkat akurasi prediksi 86 % sehingga dapat disimpulkan bahwa simulasi dan prediksi menggunakan Monte Carlo layak gunakan sebagai pertimbangan dalam pengambilan keputusan.
Co-Authors Abdussalam Al Akbar Ahmad Asyhari Annisa Putri Pratiwi Defri Wiranata Dellya Septari Devi Sartika Devi Sartika Dewi Suranti Edy Rahmat Efran Fernando Ade Pratama Eky Heryendy HR Fredricka, Jhoanne Gita Dahlia Lestari Gustian Febri Syah Putra Hengki Jon Saputra Herlina Latipa Sari Ila Yati Beti Intan Diba Aulia Sari Jusuf Wahyudi Jusuf Wahyudi Kanedi, Indra Kanedi Khairil Khairil Lena Elfianty Lianda, Deri Liza Yulianti M Dicky Imansyah Mesterjon Mesterjon Natali Mevian Deaz Nofi Qurniati Ockhy Jey Fhiter. W Olvi Mariani Rahmat Pidi Putra Redo Osi Putra Reno Supardi Ricky Zulfiandry Ridho Rahman Kurnianto Ridwan Ridwan Rodi Rodi Ronaldi Aprilianto Ronaldo Praja Saputra Sallaby, Achmad Fikri Shintia Cantika Siswanto Siswanto Venny Novita Sari Yupianti, Yupianti