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Siti Armiza Mohd Aris
Universiti Teknologi Malaysia

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Electroencephalogram (EEG) stress analysis on alpha/beta ratio and theta/beta ratio Tee Yi Wen; Siti Armiza Mohd Aris
Indonesian Journal of Electrical Engineering and Computer Science Vol 17, No 1: January 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v17.i1.pp175-182

Abstract

This paper presents an analysis of stress feature using the power ratio of frequency bands including Alpha to Beta and Theta to Beta. In this study, electroencephalography (EEG) acquisition tool was utilized to collect brain signals from 40 subjects and objectively reflected stress features induced by virtual reality (VR) technology. The EEG signals were analyzed using Welch’s fast Fourier transform (FFT) to extract power spectral density (PSD) features which represented the power of a signal distributed over a range of frequencies. Slow wave versus fast wave (SW/FW) of EEG has been studied to discriminate stress from resting baseline. The results showed the Alpha/Beta ratio and Theta/Beta ratio are negatively correlated with stress and indicated that the power ratios can discriminate the data characteristics of brainwaves for stress assessment.
Distribution Power Loss Minimization via Distributed Generation, Capacitor and Network Reconfiguration Mohd Nabil Bin Muhtazaruddin; Nurul Aini Bani; Siti Armiza Mohd Aris; Hazilah Mad Kaidi; Abdul Yasser Abd Fatah; Jasrul Jamani Jamia; Firdaus Muhammad-Sukki; Siti Hawa Abu-Bakar
Indonesian Journal of Electrical Engineering and Computer Science Vol 5, No 3: March 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v5.i3.pp488-495

Abstract

This paper presents a solution to solve the network reconfiguration, DG coordination (location and size) and capacitor coordination (location and size), simultaneously. The proposed solution will be determined by using Artificial Bee Colony (ABC). Various case studies are presented to see the impact on the test system, in term of power loss reduction and also voltage profiles. The proposed approach is applied to a 33-bus test system and simulate by using MATLAB programming. The simulation results show that combination of DG, capacitor and network reconfiguration gives a positive impact on total power losses minimization as well as voltage profile improvement compared to other case studies.
Engaging youths in skill development through network system wiring workshop in rural area Hazilah Mad Kaidi; Norulhusna Ahmad; Nor Fazilah Mohd Hashim; Fatimah Salim; Mohd Nabil Muhtazaruddin; Nurul Aini Bani; Norliza Mohamed; Rafizah Musa; Siti Armiza Mohd Aris; Siti Zura A Jalil
Indonesian Journal of Electrical Engineering and Computer Science Vol 16, No 2: November 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v16.i2.pp950-955

Abstract

Nowadays, youths underuse their time, energy and creativity in a vast number of other activities, which lead to almost nothing in return. Thus, to fully utilise their huge potential of skills and abilities is by offering productive ways to attract young people in educational-related activities. This paper is presenting the community project on the network wiring system workshop that has been conducted for the young generation at Kg. Serting Ulu, Simpang Pertang Jempol, Negeri Sembilan, Malaysia. The aim of participating in this project is to deliver the knowledge base and develop skills in technology and engineering. In addition, it is also intended to develop interpersonal skills, communication and lifelong learning as well as to increase the ability of a young generation to generate a side income by venturing into entrepreneurship field. Participants in this network system wiring workshop were exposed to a multitude of basic installation and wiring techniques in which they were able to shape their personalities with the advantage of acquired technology and engineering skills. As a result, the return on investment (RoI) and social return on investment (SRoI) targets for the workshop can be achieved. It was conducted at a rural area named as Kampung Serting Ulu, Simpang Pertang Jempol, Negeri Sembilan, Malaysia. 
Co-Authors Abdul Yasser Abd Fatah Fatimah Salim Firdaus Muhammad-Sukki Hazilah Mad Kaidi Jasrul Jamani Jamia Mohd Nabil Bin Muhtazaruddin Mohd Nabil Muhtazaruddin Nor Fazilah Mohd Hashim Norliza Mohamed Norulhusna Ahmad Nurul Aini Bani Rafizah Musa Siti Hawa Abu-Bakar Siti Zura A Jalil Tee Yi Wen