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Journal of Computer Science and Informatics Engineering
Published by Ali Institute of Research and Publication
ISSN : -     EISSN : 28278356     DOI : -
Core Subject : Science,
Computer Science & IT
Artificial Intelligence Machine Learning Natural Language Processing Computer Vision Text Speech Text Mining Data mining Cryptography Data visualization Expert System Deep Learning Fuzzy Logic IoT and smart environments Neural Networks Pattern Recognition Image Processing Optimization Digital Signal Processing Networking Technology Web intelligence
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "Vol 5 No 1 (2026): January" : 2 Documents clear
UI/UX Design Analysis and Design Using The Design Thinking Method On PT. Ridho Makmur Sentosa Website Purnamasari, Indah; Wicaksono Putra, Aldhan
Journal of Computer Science and Informatics Engineering Vol 5 No 1 (2026): January
Publisher : Ali Institute of Research and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/cosie.v5i1.1290

Abstract

The development of information technology demands that companies provide efficient and easy-to-use digital services. PT. Ridho Makmur Sentosa, as a logistics service provider, faces obstacles in delivering shipping information through a website whose interface is less than optimal and does not support the user experience. This study aims to analyze and redesign the UI/UX appearance of the Ridho Logistics website using a Design Thinking approach that focuses on user needs. This method is implemented through five stages, namely empathy, definition, ideation, prototype, and testing. Data collection was carried out through observation, interviews, and questionnaires involving 30 respondents. The interface usability evaluation used the System Usability Scale (SUS). The results showed an increase in the average score from 52.4 (Marginal–Low category) for the previous design to 80.8 (Excellent category) for the new design, indicating that the new UI/UX design has met user needs by improving the quality of the PT. Ridho Makmur Sentosa website interface design.
Implementation of Smart Feeder Based on Internet of Things (IoT) for Fish Aquarium Misniati, Misniati; Delsi Samsumar, Lalu; Zaenudin, Zaenudin
Journal of Computer Science and Informatics Engineering Vol 5 No 1 (2026): January
Publisher : Ali Institute of Research and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/cosie.v5i1.1292

Abstract

Household aquarium maintenance is generally performed manually, including feeding, monitoring temperature and turbidity, and water replacement, which is time-consuming and may reduce water quality, leading to stress or fish mortality. Although Internet of Things (IoT) technology has developed, its application in household aquariums remains limited. This study designed and implemented an IoT-based smart feeder with automatic feeding, water quality monitoring, and automatic water replacement using ESP32, DS18B20 temperature sensor, turbidity sensor, ultrasonic sensor, RTC, servo motor, water pump, and the Blynk application, applying a prototyping method. Tests showed the DS18B20 sensor had an average error of ±1.55% with 98.45% accuracy and ±1.5 s response time; the turbidity sensor distinguished clear and turbid conditions with 99% accuracy and ±2 s response; the ultrasonic sensor reached 92%; feed distribution achieved 98.6% with 1.2 s servo response; and water replacement achieved 66.7%–90% depending on turbidity threshold, with Blynk latency <2 s. Overall, the system achieved an average success rate of 91.5%, reducing manual workload, maintaining optimal water quality, and improving user convenience, while providing opportunities for further IoTbased aquarium automation development at the household scale

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