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All Journal INFORMAL: Informatics Journal RABIT: Jurnal Teknologi dan Sistem Informasi Univrab JITK (Jurnal Ilmu Pengetahuan dan Komputer) JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) CICES (Cyberpreneurship Innovative and Creative Exact and Social Science) Indonesian Journal of Data and Science Jurnal Nuansa Akademik: Jurnal Pembangunan Masyarakat Jurnal Minfo Polgan (JMP) Buletin Sistem Informasi dan Teknologi Islam Ilmu Komputer untuk Masyarakat Jurnal (FORSINTA) Informatika, Sistem Informasi dan Kehutanan Journal of Information Technology and its Utilization Linier: Literatur Informatika dan Komputer Journal of Computer Science & Intelligent Systems
Erick Irawadi Alwi
Universitas Muslim Indonesia
Religion Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Social Sciences Other

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SISTEM PERSEDIAAN STOK BARANG MENGGUNAKAN METODE AGILE BERBASIS WEB PADA BENGKEL THO’BONE SHANTIKA; Erick Irawadi Alwi; St. Hajrah Mansyur
Rabit : Jurnal Teknologi dan Sistem Informasi Univrab Vol 11 No 1 (2026): Januari
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/rabit.v11i1.7174

Abstract

Inventory management at Bengkel Tho’Bone was previously conducted manually, which often resulted in data inconsistencies, delays in stock monitoring, and difficulties in generating accurate inventory reports. This study aims to design a web-based inventory management system using the Agile method as a software development approach to improve efficiency and accuracy in stock management. The study applies the CodeIgniter framework as the system development framework because it adopts the Model–View–Controller (MVC) architecture, which facilitates the separation of business logic, user interface, and data processing. The system development process is carried out through the stages of planning, design, development, testing, and evaluation, which are performed repeatedly according to user requirements. The system is designed to assist administrators and staff in managing item data, suppliers, as well as incoming and outgoing stock transactions. The results show that the developed system is capable of automating stock recording, providing restock notifications when inventory reaches the minimum threshold, and generating structured and easily accessible inventory reports. The implementation of this system improves operational efficiency, reduces human error, and enhances transparency in inventory management. Overall, the application of a web-based inventory management system using the Agile approach and the CodeIgniter framework has proven effective in optimizing inventory control and supporting accurate decision-making at Bengkel Tho’Bone.  
IMPLEMENTASI KARTU TANDA MAHASISWA DIGITAL BERBASIS BLOCKCHAIN Muhammad Ihsan; Erick Irawadi Alwi; Yulita Salim
Rabit : Jurnal Teknologi dan Sistem Informasi Univrab Vol 11 No 2 (2026): Juli
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/rabit.v11i2.8084

Abstract

Identity management in higher education still generally relies on physical cards and centralized systems that are vulnerable to loss, forgery, and limited independent verification. This study aims to design and implement a blockchain-based digital student identity card system that supports integrated credential issuance, verification, and revocation. The study uses the Design Science Research Methodology (DSRM) through the stages of problem identification, design, prototype development, demonstration, and evaluation. The system is built using a hybrid architecture, in which student identity data are stored off-chain, while credential hashes and revocation status are recorded on-chain through a smart contract deployed on the Polygon Amoy Testnet. Credentials are issued in the form of JWT-based Verifiable Credentials and signed using the ES256K algorithm. The test results show that the system successfully implements its main functions, namely credential issuance, verification, and revocation. Performance testing also shows that verification can be carried out without incurring gas costs and with a response time that remains feasible for practical use. Overall, the developed system is feasible to support digital student identity services with better credential integrity and easier verification.  
Comparison of ResNet50 and ResNet101 Feature Extraction for Tea Leaf Disease Classification Using Support Vector Machine Wistiani Astuti; Erick Irawadi Alwi; Farniwati Fattah; Tasrif Hasanuddin; Julisa; Ulfa Sari; Ainur Rahma Almagfirah
Indonesian Journal of Data and Science Vol. 7 No. 2 (2026): Indonesian Journal of Data and Science
Publisher : Yocto Brain

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56705/ijodas.v7i2.338

Abstract

Introduction: Tea leaf diseases can substantially reduce crop quality and productivity, making early and accurate diagnosis important for effective disease management. This study compares ResNet50 and ResNet101 as pretrained deep feature extractors combined with Support Vector Machine (SVM) to determine whether a deeper residual architecture can improve discrimination among visually similar tea leaf disease classes. Method: Images were obtained from the Kaggle “Identifying Disease in Tea Leaves” dataset comprising eight classes. Data augmentation increased each class to 800 images, yielding 6,400 images that were divided into training and testing sets using an 80:20 ratio. ResNet50 and ResNet101 pretrained on ImageNet were used as fixed feature extractors, and the resulting feature vectors were standardized and classified using an RBF-kernel SVM. Results and Discussion: ResNet101–SVM achieved the best performance with 97.97% accuracy and precision, recall, and F1-score of 98%, substantially outperforming ResNet50–SVM, which achieved 89.15% accuracy, 90% precision, 89% recall, and 89% F1-score. The deeper ResNet101 architecture provided more discriminative representations for visually similar disease patterns, although a small number of misclassifications remained. Conclusion: ResNet101 combined with SVM provides a more accurate and reliable framework than ResNet50–SVM for multi-class tea leaf disease classification and offers a promising foundation for automated disease diagnosis systems.
Perancangan Sistem Keamanan Jaringan Intrusion Prevention System Menggunakan Suricata Dan IPTables Andi Rahmat Aulia; Erick Irawadi Alwi; Andi Widya Mufila Gaffar
LINIER: Literatur Informatika dan Komputer Vol 1, No 3 (2024)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/linier.v1i3.2500

Abstract

Server merupakan perangkat dalam jaringan telekomunikasi yang bertugas mendistribusikan perangkat lunak IPTables danbasis data. Salah satu tipe server yang rentan terhadap serangan Denial of Service (DoS) merupakan web server. SeranganDoS bekerja dengan menghabiskan sumber daya server sehingga menyebabkan server tersebut menjadi tidak dapat diaksesatau down. Oleh karena itu, penelitian ini bertujuan untuk mengembangkan sistem pencegahan serangan denganmenggunakan Intrusion Prevention System (IPS) yang memanfaatkan Suricata dan IPTables sebagai mekanisme deteksidan pencegahan serangan DoS pada web server. IPS bekerja dengan menganalisis lalu lintas jaringan yang masuk dankeluar, melakukan inspeksi mendalam terhadap setiap paket data yang melintasi jaringan. Dengan penerapan Suricata danIPTables pada web server, administrator jaringan dapat memastikan keamanan web server dari ancaman serangan.Penelitian ini akan menunjukkan bahwa aturan Suricata dan IPTables efektif dalam mendeteksi serangan yang dilakukandengan alat Hping3, sebuah perangkat lunak yang digunakan untuk melakukan pemindaian jaringan dan secara defaulttersedia di Kali Linux yang akan dimanfaatkan untuk simulasi serangan DoS
Implementasi Metode Static Forensics Untuk Ekstraksi File Steganografi Pada Bukti Digital Menggunakan Framework NIST Asran Asran; Erick Irawadi Alwi; Huzain Azis
JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Vol 11, No 1 (2026)
Publisher : STKIP PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jipi.v11i1.7406

Abstract

Steganografi berfungsi sebagai teknik anti-forensik yang memungkinkan pelaku kejahatan menyembunyikan informasi dalam pesan lain, hal tersebut dapat menyulitkan penyelidik untuk menemukan bukti sebenarnya atas suatu kejahatan. Oleh karena itu, penyelidik harus mengenali dan memanfaatkan alat yang tepat untuk ekstraksi guna mengakses pesan yang melibatkan steganografi. Penelitian ini bertujuan untuk menganalisis bukti digital dengan menerapkan metode forensik statis berdasarkan kerangka kerja yang disiapkan oleh National Institute of Standards and Technology (NIST), penelitian ini juga berfokus pada proses ekstraksi file yang disusupi menggunakan steganografi, yang dilakukan berdasarkan skenario kejahatan. Alat yang dipakai dalam penelitian ini mencakup FTK Imager, Autopsy, HashMyFiles, USB Write Blocker, WinHex, Stegspy, serta InvisibleSecrets. Analisis proses ekstraksi menunjukkan bahwa, dari 10 file yang diperiksa sesuai dengan skenario kasus, 9 file berhasil diekstraksi dan menghasilkan tingkat keberhasilan sebesar 90%. Sebaliknya, 10% file yang tersisa tidak berisi data atau informasi tersembunyi yang relevan. Dari hasil tersebut dapat disimpulkan bahwa file steganografi yang berhasil diekstrak dapat dijadikan sebagai alat bukti materiil hukum yang sah.
Penerapan Metode Blockchain Untuk Verifikasi Ijazah Digital Menggunakan Pendekatan Hash Alghorithm Verification Miftahul Rifqi; Yulita Salim; Erick Irawadi Alwi
Jurnal Minfo Polgan Vol. 15 No. 3 (2026): Artikel Penelitian
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/jmp.v15i3.16552

Abstract

Pemalsuan ijazah digital menjadi permasalahan yang dapat mengurangi kepercayaan terhadap keaslian dokumen akademik. Penelitian ini bertujuan mengembangkan sistem verifikasi ijazah digital berbasis blockchain untuk menjamin integritas dan keaslian dokumen. Sistem dibangun dengan mengintegrasikan algoritma SHA-256, Merkle Tree, digital signature, dan blockchain. Proses verifikasi dilakukan melalui pembangkitan hash dokumen, pembentukan Merkle Root, serta pencocokan Merkle Root dan digital signature dengan data referensi yang tersimpan pada blockchain. Pengujian dilakukan menggunakan 14 dokumen yang terdiri atas 1 ijazah asli dan 13 ijazah yang telah dimodifikasi pada berbagai komponen data. Hasil pengujian menunjukkan bahwa sistem mampu mengidentifikasi seluruh dokumen sesuai kondisi sebenarnya dengan Accuracy Verification Rate sebesar 100%. Setiap perubahan data menghasilkan nilai hash dan Merkle Root yang berbeda sehingga dapat dideteksi secara akurat. Hasil penelitian menunjukkan bahwa integrasi SHA-256, Merkle Tree, digital signature, dan blockchain efektif dalam meningkatkan keamanan, integritas, serta keandalan proses verifikasi ijazah digital.
Co-Authors Abd Hamid Adhitya Nugraha Ahmad Qayyum Ibnu Hidayat Ainur Rahma Almagfirah Andi Rahmat Aulia Andy Aprianto Asman Haris Asran Asran Dedy Atmajaya Dolly Indra Farniwati Fattah Fathur Rahman Fatwa Hadi Ilham Pamungkas Fitriyani Umar Gaffar, Andi Widya Mufila Gery Ardiansyah Saputra Herdianti Darwis Herdianti Herdianti Herman Herman Hidzrullah Ash Syuhrawardi Huzain Azis Ihramsari Akidah Izzahara Zalzabila Jezika Anastazya Julisa Karina Fitriwulandari Ilham Lutfi Budi Ilmawan Maulana Nuruddin Djamin Miftahul Rifqi Muh. Ainun Amri Mursalim Muh. Arsyil Karimi Muh. Ridwan Rahim Muhammad Arfah Asis Muhammad Ihsan Muhammad Syahrizal Darwis Mutia Nurul Ilmi Nasrullah Syahir Nurmainna Nurmainna Nurul Ilmy Husain Ramdan Satra Riska Wulandari SHANTIKA Sheila Nur Afni Zafitri Siska Anraeni St. Hajrah Mansyur Syahrul Mubarak Abdullah Tasmil Tasmil Tasrif Hasanuddin Ulfa Sari Wahyu Iriansyah Sopamena Wistiani Astuti Yulita Salim