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All Journal Computer Journal Jurnal Riset dan Aplikasi Mahasiswa Informatika (JRAMI)
Haekal Mimtazulfaqhi Zaydan
Universitas Pamulang
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management

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Evaluasi Usability Mentari UNPAM Menggunakan Model SUS (System Usability Scale) Firman Pratama; Devi Damayanti; Haekal Mimtazulfaqhi Zaydan; Gilang Ramadhan; M. Hafizh Rafid Hidayat
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.513

Abstract

Current higher education infrastructure heavily relies on Learning Management Systems (LMS) as digital hubs for academic interaction. Universitas Pamulang implemented Mentari UNPAM to support large-scale online learning. However, the platform’s usability and User Experience (UX) have not been empirically assessed using standardized metrics. This lack of evidence contributes to increased cognitive load for users and limits the implementation of User-Centered Design (UCD). This study aims to evaluate the usability level of Mentari UNPAM and propose interface redesign recommendations. A descriptive quantitative approach was conducted by administering the System Usability Scale (SUS) to 150 active Informatics Engineering students. The results show an average SUS score of 68.27. Based on the Sauro-Lewis scale, this corresponds to a Fair-to-Good range with an Acceptable rating. Data distribution analysis further indicates satisfaction polarization associated with interaction friction during the First-Time User Experience (FTUE) phase, navigation disorientation, and server latency during peak traffic. As mitigation, the study recommends restructuring the layout hierarchy of critical features, integrating breadcrumb navigation, providing digital onboarding, and optimizing server architecture.
Integritas Data Riwayat Kopi Gayo Melalui Protokol Zero-Trust Ethereum Haekal Mimtazulfaqhi Zaydan; Devi Damayanti
Jurnal Riset dan Aplikasi Mahasiswa Informatika (JRAMI) Vol. 7 No. 03 (2026): Jurnal Riset dan Aplikasi Mahasiswa Informatika (JRAMI)
Publisher : Program Studi Teknik Informatika, FTIK, Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/jrami.v7i03.1878

Abstract

The conventional logistics information system architecture in the Gayo coffee supply chain suffers from a structural vulnerability in the form of a single point of failure, where reliance on centralized authorization introduces the risk of retrospective database tampering. This degrades transparency and fails to provide computational non-repudiation guarantees. This research proposes a supply chain tracking model based on a hybrid Web2 and Web3 architecture to mitigate information asymmetry through the implementation of a Zero-Trust protocol on the Ethereum network (Sepolia Testnet). The system decouples computational workloads: a relational database acts as a low-latency buffer for tiered authorization consensus (Maker-Checker), while a Solidity-based smart contract serves as a decentralized notarization layer. Validated logistical payloads are cryptographically locked into network blocks to ensure data immutability. Architectural evaluation demonstrates that the system successfully facilitates Zero-Trust data extraction; consumers can independently validate the Transaction Hash (TxHash) via QR code scanning, directly bypassing internal servers to retrieve data from blockchain nodes. This approach is empirically proven to establish anti-manipulation and transparent product history integrity.
Co-Authors Devi Damayanti Firman Pratama Gilang Ramadhan M. Hafizh Rafid Hidayat