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p-Index From 2021 - 2026
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All Journal Bulletin of Electrical Engineering and Informatics Journal of Education and Learning (EduLearn)
Rahmita Wirza O. K. Rahmat
Universiti Putra Malaysia
Humanities Education Electrical & Electronics Engineering Library & Information Science Social Sciences Other

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An algorithm to measure unsymmetrical circle shape of intravascular ultrasound image using image processing techniques Suhaili Beeran Kutty; Rahmita Wirza O. K. Rahmat; Sazzli Shahlan Kassim; Hizmawati Madzin; Hazlina Hamdan
Bulletin of Electrical Engineering and Informatics Vol 10, No 1: February 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i1.2694

Abstract

In diagnosing coronary artery disease, measurement of the cross-sectional area of the lumen, maximum and minimum diameter is very important. Mainly, it will be used to confirm the diagnosing, to predict the stenosis if any and to ensure the size of the stent to be used. However, the measurement only offers by the existing software and some of the software needs human interaction to complete the process. The purpose of this paper is to present the algorithm to measure the region of interest (ROI) on intravascular ultrasound (IVUS) using an image processing technique. The methodology starts with image acquisition process followed by image segmentation. After that, border detection for each ROI was detected and the algorithm was applied to calculate the corresponding region. The result shows that the measurement is accurate and could be used not only for IVUS but applicable to solid circle and unsymmetrical circle shape. 
Bandwidth-immediacy-social connectedness framework for rural secondary school’s extended m-learning experience Ain Arissa Zainuddin; Noris Mohd Norowi; Rahmita Wirza O. K. Rahmat; Mas Nida Md. Khambari
Journal of Education and Learning (EduLearn) Vol 20, No 1: February 2026
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/edulearn.v20i1.22726

Abstract

Mobility, instant access to knowledge, social interaction, and flexibility in terms of time, location, and pace are just few of the many benefits that mobile learning (m-learning) provides. To build an ideal m-learning platform, a framework acts as a plan that directs the construction of a unified, user-friendly, and efficient m-learning environment. Through the utilisation of Stanford’s bandwidth-immediacy matrix as a foundational framework, the purpose of this study is to investigate the possibility of incorporating social connectedness as z-axis in between the bandwidth and immediacy axes by proposing a 3-dimensional matrix called bandwidth-immediacy-social connectedness in blue zone framework, shorten as BISC-B framework. A progressive web application (PWA) called bridging the urban-rural knowledge dissemination and learning gap (BURDLe) was developed with the implementation of BISC-B in order to fulfil the objectives of this study. BURDLe was evaluated for 2 weeks by students and teachers from Bachok, Kelantan, a remote Malaysian district. This study collected data sequentially using explanatory methods. Quantitative and descriptive analysis were used to summarise questionnaire data. Conversely, interviews were qualitatively analysed to validate the questionnaire results. The result of this study has revealed that social-connectedness is a factor that can influence the m-learning experience, along with bandwidth utilisation and immediacy.
Co-Authors Ain Arissa Zainuddin Hazlina Hamdan Hizmawati Madzin Mas Nida Md. Khambari Noris Mohd Norowi Sazzli Shahlan Kassim Suhaili Beeran Kutty