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All Journal Jurnal Agricultural Biosystem Engineering CHAIN: Journal of Computer Technology, Computer Engineering and Informatics
Wahyu Hidayat
Universitas Islam Negeri Raden Intan Lampung
Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology

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Analisis Citra Digital Sederhana untuk Kuantifikasi Kerusakan Mekanis Buah Pisang Setelah Simulasi Transportasi Wahyu Hidayat; Cicih Sugianti
Jurnal Agricultural Biosystem Engineering Vol. 5 No. 2 (2026): June 2026
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v5i2.13275

Abstract

Bruising is a common form of mechanical damage occurring in bananas during transport that can reduce fruit quality. This study aimed to determine the optimal threshold for measuring banana bruise areas using digital image analysis and to evaluate the effects of vibration frequency and duration on bruise development during storage. The percentage of bruised area was derived from image segmentation using ImageJ at threshold values of 120, 130, 140, 150, and 160. The optimal threshold was selected using Principal Component Analysis (PCA), while treatment effects were analyzed using analysis of variance (ANOVA) and Duncan’s post-hoc test. PCA results indicated that all thresholds were strongly correlated and represented similar information; consequently, a threshold of 150 was selected as the best option based on statistical results and visual evaluation of the segmentation. ANOVA results showed that the interaction between vibration frequency and duration had a highly significant effect on the percentage of bruised area, whereas duration alone did not have a significant effect. Duncan’s test revealed that the 10 Hz–60 minute combination resulted in the lowest percentage of bruised area, while the 30 Hz–60 minute combination resulted in the highest. This study demonstrates that a threshold of 150 can serve as a basis for quantifying banana bruising and that the extent of bruising during transport simulation is influenced by the combination of vibration frequency and duration.
An Usability Evaluation of the English Education Study Program Website Using the System Usability Scale Wahyu Hidayat; David Naista; Ghifar Javad H Aziz
CHAIN: Journal of Computer Technology, Computer Engineering, and Informatics Vol. 4 No. 3 (2026): Volume 4 Number 3 July 2026
Publisher : PT. Tech Cart Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58602/chain.v4i3.308

Abstract

The English Education Study Program website serves as an essential platform for disseminating academic information, supporting communication, and providing various services to students, prospective students, alumni, and others. The effectiveness of a website depends not only on the availability of information but also on its usability, which determines how easily users can interact with and benefit from the system. This study aims to evaluate the usability of the English Education Study Program website https://english.tarbiyah.radenintan.ac.id using the System Usability Scale (SUS). A quantitative descriptive approach was employed, involving website users as respondents. Data were collected through a SUS questionnaire consisting of ten standardized statements measured using a five-point Likert scale. The collected responses were analyzed by calculating individual SUS scores and determining the overall usability score of the website. The evaluation focused on key usability aspects, including learnability, efficiency, effectiveness, consistency, and user satisfaction. The website obtained an average SUS score of 78.5 out of 100. Base on that, the findings identify strengths and areas that require improvement to enhance the user experience and optimize information services. The study demonstrates that the SUS method is a practical and reliable tool for measuring website usability and generating valuable feedback for website development. In addition, the study contributes empirical evidence by comparing the obtained SUS score with previous website usability studies. The conclusions can be used as a basis for improving the quality of the English Education Study Program website and ensuring that it better meets the needs and expectations of its users.
Co-Authors Cicih Sugianti David Naista Ghifar Javad H Aziz