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All Journal Proceeding ISETH (International Summit on Science, Technology, and Humanity) Journal of Computer-based Instructional Media Akademika Geoid - Journal of Geodesy and Geomatics
Rachmawati, Aulia
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Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Medicine & Pharmacology Social Sciences Other

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Journal : Akademika

 1 
SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN VENDOR BAHAN BAKU STRATEGIS DENGAN METODE ANALYTICAL HIERARCHY PROSES (AHP) DAN TOPSIS: Decision Support System (DSS), Multi-Criteria Decision Making, (MCDM), Analytical Hierarchy Process  (AHP), Technique for Order Preference by, Similarity to Ideal Solution (TOPSIS) Muhammad Damas Fatih; Pariyadi, Pariyadi; Rachmawati, Aulia; Anzari, Yandi
JURNAL AKADEMIKA Vol 18 No 1 (2025): Jurnal Akademika
Publisher : LP2M Universitas Nurdin Hamzah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53564/g7wc3t46

Abstract

Vendor selection at PT. Manufaktur Digital Jaya is still prone to subjectivity and bias that focuses on price, which risks causing production bottlenecks and quality decline. This decision is a complex Multi-Criteria Decision Making (MCDM) problem and requires an objective and structured assessment. This research aims to design a Decision Support System (DSS) to determine the best vendor at PT. Manufaktur Digital Jaya, using a combination of the Analytical Hierarchy Process  (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods. The AHP analysis was validated using Expert Choice software and the TOPSIS calculations were performed with Microsoft Excel. The AHP method is used to determine the priority weights of the assessment criteria, while TOPSIS is used to rank the vendor alternatives based on their closeness to the ideal solution. Five main criteria were established, covering Product Quality (C1), Unit Price (C2), Delivery Accuracy (C3), Service Capacity (C4), and Reputation (C5). The results of the AHP analysis show that Product Quality (C1) and Service Capacity (C4) are the criteria with the highest weights, reflecting the company's strategic priority on quality and long-term support.
ANALISIS KETAHANAN KOMBINASI TEKNIK KRIPTOGRAFI RAIL FENCE DAN VIGENERE CIPHER TERHADAP SERANGAN BRUTE-FORCE MENGGUNAKAN PEMROGRAMAN PYTHON: Algorithms, Kriptografi, Rail Fence cipher, Vigenere cipher, Brute-Force Rachmawati, Aulia; Anzari, Yandi; Fatih, Muhammad Damas; Pariyadi, Pariyadi
JURNAL AKADEMIKA Vol 18 No 1 (2025): Jurnal Akademika
Publisher : LP2M Universitas Nurdin Hamzah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53564/6w0a4245

Abstract

Data is an essential asset that must be protected due to its strategic role in maintaining the continuity of information systems. Therefore, data security becomes a crucial aspect in information management. One of the approaches to ensure data security is through the application of cryptographic techniques. Two commonly used classical cryptographic algorithms are the Rail Fence Cipher and the Vigenere Cipher. However, the use of a single algorithm has weaknesses, as it remains vulnerable to brute-force attacks. This study aims to combine two cryptographic methods, namely the transposition technique (Rail Fence) and the substitution technique (Vigenere), to enhance resistance against brute force attacks. The research employs an experimental method by implementing the combined algorithms using the Python programming language. Testing was conducted on three scenarios: encryption using Rail Fence, Vigenere, and their combination. The results show that the combined algorithm increases key space and produces more complex character distribution patterns, thereby improving security against brute-force attacks.
APLIKASI LAYANAN PELANGGAN BERBASIS WEB DAN MOBILE PADA PERUSAHAAN AIR MINUM: Application, Complaint, Customer Service, Mobile, Water Company Pariyadi, Pariyadi; Damas Fatih, Muhammad; Anzari, Yandi; Rachmawati, Aulia
JURNAL AKADEMIKA Vol 18 No 1 (2025): Jurnal Akademika
Publisher : LP2M Universitas Nurdin Hamzah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53564/0898pj82

Abstract

The quality of public service is a crucial factor for companies such as the Regional Water Company. The main challenges often faced are the slow handling of customer complaints, difficulty in accessing billing information, and the bureaucratic process of new connection registration. This research aims to design and build an integrated web and mobile-based customer service information system. The research method used is the Waterfall model, which includes the stages of requirements analysis, system design, implementation, and testing. The result of this research is the customer service application, which consists of three platforms: (1) A back office web for administrators, supervisors, and superadmins to manage master data, monitor, and delegate complaints and reports; (2) An Android Mobile Application for Customers, featuring online complaints, complaint tracking, new connection registration, bill checking, self-service meter reading, and news information; (3) An Android Mobile Application for Field Officers, which functions to receive and update the status of complaint work orders. The implementation of this system has successfully transformed manual business processes into digital ones, thereby increasing response speed, data transparency, and customer satisfaction one of them is PERUMDA Air Minum Tirta Mayang.      
Co-Authors Alghifari, Hamzah Damas Fatih, Muhammad Fatih, Muhammad Damas Muhammad Damas Fatih Nur Maghfirah Aesthetika Pariyadi Poppy Febriana Renaldi Yulvianda Rochmania, Ainur Yandi Anzari Yanto Budisusanto, Yanto