Abdul Hamid
@unsyiah.ac.id
Pendidikan Fisika
Universitas Syiah Kuala
RESEARCH INTERESTS
Physic Education
Scopus Publications
Scopus Publications
W Y Choong, W Khairunizam, W A Mustafa, M Murugappan, A Hamid, S Z Bong, R Yuvaraj, M I Omar, A K Junoh, Hasimah Ali,et al.
IOP Publishing
Abstract It is aimed at finding the correlation between EEG channels from six induced emotions in normal subjects. The multichannel EEG data was measured by Pearson’s correlation coefficient to investigate the linear relationship between channel pairs in alpha, beta and gamma EEG frequency sub-bands. The EEG data were collected from 12 healthy subjects, with six induced emotions by audio-visual stimuli, which were anger, disgust, fear, happiness, sadness and surprise. The 14-channel wireless Emotiv Epoc was used for data collection. The results show that the EEG channels in alpha band was relatively higher correlation than in beta and gamma bands. The highest correlation for all emotions in alpha band were the channel pairs in right frontal region, FC6-F4 and F4-AF4. In beta and gamma bands, the highest correlation pairs involved the right frontal, occipital and parietal regions, which were FC6-F4 and O2-P8.
Atiya Rahman, Tehseen Naveed, Sumeera Zulfiqar, Aisha Akhtar, Andaleeb Hamid, and Nadia Iftikhar
Army Medical College
Objective: To determine the satisfaction rate of dermatology patients, after purposefully improving the consultation skills of residents.
 Study Design: Mix-method study.
 Place and Duration of Study: Department of Dermatology, Combined Military Hospital Lahore, from Jan to Sep 2020,
 Methodology: Empathy informed curriculum was delivered by the consultants and senior registrar prior to the conduction of study as well as an ongoing process to the post-graduate trainees in the department. Patients’ satisfaction with the quality of dermatological consultation was assessed by consultation and relational empathy (CARE) measure. One hundred and seventy six patients were recruited during the study period. Descriptive statistics such as frequencies, means, standard deviations and percentages were determined from the data. Advanced level analysis was done by Pearson’s correlation coefficients to analyse relationships between variables.
 Results: The mean age of study participant was 39.01 ± SD 19.81 year, with a minimum of 3 years and maximum of 91 years. Ninety two (52.3%) patients were male and 84 (47.7%) were female. The mean consultation and relational empathy score was 40.34 ± SD 8.56 with 16 minimum score and 50 maximum. One hundred and sixty six (94.3%) patients were overall satisfied with the consultation whereas 10 (5.7%) were not.
 Conclusion: We found high satisfaction rate amongst patients attending dermatology outpatient department. Empathy informed curricula should be emphasized upon to provide holistic patient care.
Z A Tan, M T A Rahman, A Rahman, A F A Hamid, N A M Amin, H A Munir, and M M M Zabidi
IOP Publishing
Abstract This paper focus on analysis on Long Range (LoRa) handover session was conducted in urban, suburban, and rural area in Perlis state, Malaysia. The experiment will consists of observation and analyzed on three area using LoRa communication modules. These three areas were collected on its Received Signal Strength Indicator (RSSI) to know the signal strength over the distance from base station and the differences physical object appear in Line of Sight (LoS) during the transmitting and receiving its signal from LoRa Transmitter to LoRa Receiver. The result at three area of different location have shown various pattern in term of RSSI where the each of the location give the distance that signal of LoRa could reach whilst the motion of vehicle is constant. From this experiment, certain level of RSSI value will be chosen to set as minimum boundary switcher for handover process state indicator and be used handover process algorithm in network switcher.
M A C Din, M T A Rahman, H A Munir, A Rahman, and A F A Hamid
IOP Publishing
Abstract CAN-bus technology is adapted in various vehicles to reduce the wiring harness and controls the vehicle exploitation physical system. In this paper, Control Area Network (CAN)- bus protocol is enforced employing a Single Board Computer (SBC) and access with each other by set a sender and receiver to get the data transmission. A special CAN-bus application layer protocol is intended for the high reliable and high period management network of the vehicle system. However not all microcontroller that used for Computer module in vehicle network had CAN-bus communication port. Thus the CAN-bus Converter is used as tool for converting data from a computer into an understandable language. The CAN-bus converter can also be used in various ways to obtain the final results of the data sent to it. Although different methods may be used, the most appropriate method cannot be identified. This project is therefore designed to find and evaluate which method is suitable for obtaining accurate data results and for avoiding abnormal data and data transfer speed.
M M M Zabidi, M T A Rahman, A Rahman, H A Munir, A H Adom, and A F A Hamid
IOP Publishing
Abstract This paper discusses the prediction of movement from the vehicles with Long Range Wide Area Network (LoRaWAN) handover communication, based on Received Signal Strength Indicator (RSSI) algorithm. The experiment consists of observation on three different environment area which is rural, sub-urban and urban at road in Kedah and Perlis state in Malaysia. This three-environment area measured based on the past studies. Handover session with a moving vehicle, predicted the movement based on direction of Global Positioning System (GPS) latitude and longitude. The communication session transferring from previous cell area network that pass by the vehicle to a new targeting cell area network with the base station connection. From this experiment and study, it is shown that the predictable or movement from one cell to another cell based on RSSI algorithm with base station connectivity can be achieved.
M A Abd Halim, M T A Rahman, N Abdul Rahim, A Rahman, A F A Hamid, and N A M Amin
IOP Publishing
Abstract Vehicle alternator is only seen as fragment piece in vehicle. This project will analyse the vehicle alternator current output flow style. A study on charging rate onto battery can be made based on this analyst. From this a prediction can be made on the vehicle alternator health and may prevent it from affecting other charging system component. Features extracted from the raw sample data are root mean square (RMS), waveform length (WL) and autoregressive (AR). These features will then go through normality test to find the sample is normally distributed or not. The normality test used in this experiment is Jarque-Bera (JB) test. After go through the normality test, it shows that need to continue with non-parametric test. Because JB test shows that p-value is less than 0.05 confidence level. Kruskal-Wallis is used as non-parametric data validation. In this test, the hypothesized value is the value is the median instead of the mean as in Analysis if Variance (ANOVA). The Kruskal-Wallis test evaluates for any significance difference in the population medians on a dependent variable across all levels of a factor. For classification K-Nearest Neighbour (KNN) is used to find the number of K to differentiate between classes. After that the K value is use in Holdout method for training and testing. Final result shows that the accuracy of this machine learning tools is 94%. This number is a good percentage to be able to called as vehicle alternator fault prediction.
A F A Hamid, M T A Rahman, A Rahman, and M M M Zabidi
IOP Publishing
Abstract In this paper, the study on path loss of cellular communication is conducted by experiment and simulation on three different communication modules at rural area. This three-communication module will have different carrier frequency to determine the effect of doppler shift to communication path loss of moving vehicle. To enhance the accuracy of these studies, both simulation and experiment output will be compared. Simulation studies will be based on proposed modified path loss model. For the experimental portion, the Path Loss will be determined based on two things: the measured received power on communication modules antenna and transmit power from base station. From this experiment, the best selection of communication module by considering the fading effect from doppler shift is selected to be used in connected car.
A F A Hamid, M T A Rahman, A Rahman, and M M M Zabidi
IOP Publishing
Abstract In this paper, the study on path loss and delay of cellular communication is conducted by considering doppler shift fading effect, shadowing effect and handover session in urban area. The experiment will consist observation on three different wireless communication module. This three-wireless module will have different carrier frequency and radio interface technologies to determine the effect of doppler shift to communication path loss and handover delay of a moving vehicle. The path loss of a moving vehicle will be determined based on measured received power on communication modules antenna and transmit power from base station. Handover delay that experienced by a moving vehicle will be measured based on data transmission latency during communication session transferring from previous cell network area that pass by the vehicle to a new cell network area. From this experiment, the best selection of wireless communication module by considering doppler shift effect and handover delay in urban area is determined as suited module to be use on connected car system.
A F A Hamid, M T A Rahman, S F Khan, A H Adom, M A Rahim, N A Rahim, M H N Ismail, and A Norizan
IOP Publishing
This paper is about an experiment for performing engines diagnostic using wireless sensing Internet of Thing (IoT). The study is to overcome problem of current standard On Board Diagnosis (OBD-II) data acquisition method that only can be perform in offline or wired method. From this paper it show a method to determined how the data from engines can be collected, make the data can be easily understand by human and sending data over the wireless internet connection via platform of IOT. This study is separate into three stages that is CAN-bus data collection, CAN data conversion and send data to cloud storage. Every stage is experimented with a two different method and consist five data parameter that is Revolution per Minute (RPM), Manifold Air Pressure (MAP), load-fuel, barometric pressure and engine temperature. The experiment use Arduino Uno as microcontroller, CAN-bus converter and ESP8266 wifi board as transfer medium for data to internet.
A Norizan, M T A Rahman, N A M Amin, M H Basha, M H N Ismail, and A F A Hamid
IOP Publishing
This paper describes the design differences between the intake manifold and restrictor used in racing cars that participate in the Formula Student (FSAE) competition. To fulfil the criteria of rules and regulation of the race, each race car must have a restriction device that has a maximum diameter of 20 mm installed between the throttle body and intake manifold. To overcome these problems, a restrictor has been designed and analysed using the steady state analysis, to reduce the loss of pressure in the restrictor. Design of the restrictor has a fixed parameter of the maximum diameter of 20mm. There are some differences that have been taken to make the comparison between the design of the restrictor, the diameter of the inlet and outlet, the curvature of the surface, convergence and divergence angle and length of the restrictor. Intake manifold was designed based on the design of the chassis, which shall not exceed the envelope defined by the FSAE competition. A good intake manifold design will affect the performance of the engine. Each design have made an analysis designed to ensure that each cylinder engine gets its air evenly. To verify the design, steady state analysis was made for a total mass flow rate and the velocity of air leaving a runner in each engine. Data such as the engine MAP reading was recorded by using Haltech ECU Management Software as reference purposes.