Pg Emeroylariffion Abas

Pg Emeroylariffion Abas
Universiti Brunei Darussalam · Faculty of Intergrated Technologies

PhD DIC BEng ACGI

About

97
Publications
37,101
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907
Citations
Citations since 2017
95 Research Items
907 Citations
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2017201820192020202120222023050100150200250300350
2017201820192020202120222023050100150200250300350

Publications

Publications (97)
Article
Full-text available
Speech dialects refer to linguistic and pronunciation variations in the speech of the same language. Automatic dialect classification requires considerable acoustic and linguistic differences between different dialect categories of speech. This paper proposes a classification model composed of a combination of classifiers for the Arabic dialects by...
Article
Full-text available
The rapidly increasing number of internet of things (IoT) and non-IoT devices has imposed new security challenges to network administrators. Accurate device identification in the increasingly complex network structures is necessary. In this paper, a device fingerprinting (DFP) method has been proposed for device identification, based on digital foo...
Article
Full-text available
The Internet of Things can be considered a technological revolution and has successfully merged the physical world with the digital world. However, heterogeneous IoT devices with different functionalities impose new security challenges in cyberspace, including node forgery, unauthorized access to data and cyberattacks. It is essential to identify n...
Article
Full-text available
Recognition of human activities is one of the most significant fields in the area of machine intelligence research, with its main objective of distinguishing various human activities. Accurate human posture extraction from images is a crucial step towards this objective. In this paper, laboratory dataset consisting of 2D and 3D images of subjects p...
Conference Paper
Full-text available
The unavailability of public datasets is the main hurdle for speech processing research targeting under-resourced languages. This paper reports the collection of a speech dataset comprising ten digits from the Kadazan language, which is one of the indigenous southeast Asian languages. Benchmark results for keyword spotting over the dataset using a...
Conference Paper
Full-text available
The usage of technologically advanced devices has seen a boom in many domains, including education, automation, and healthcare; with most of the services requiring Internet-connectivity. To secure a network, device identification plays key role. In this paper, a device fingerprinting (DFP) model, which is able to distinguish between Internet of Thi...
Conference Paper
Full-text available
A photonic crystal fiber sensor with dimensions of 2 cladding rings of circular and hexagonal air holes and a single core hole for sulfuric acid sensing is proposed and investigated through a full vector Finite Element Method on COMSOL Multiphysics software. An aqueous sulfuric acid of varied concentrations of 0%, 10%, 20%, 30% and 40% is selected...
Article
Full-text available
Agriculture is the primary and oldest industry in the world and has been transformed over the centuries from the prehistoric era to the technology-driven 21 st century, where people are always solving complex problems with the aid of technology. With the power of Information and Communication Technologies (ICTs), the world has become a global villa...
Preprint
Full-text available
The usage of technologically advanced devices has seen a boom in many domains, including education, automation, and healthcare; with most of the services requiring Internet connectivity. To secure a network, device identification plays key role. In this paper, a device fingerprinting (DFP) model, which is able to distinguish between Internet of Thi...
Preprint
Full-text available
The rapidly increasing number of internet of things (IoT) and non-IoT devices has imposed new security challenges to network administrators. Accurate device identification in the increasingly complex network structures is necessary. In this paper, a device fingerprinting (DFP) method has been proposed for device identification, based on digital foo...
Article
Full-text available
Online medical consultation can significantly improve the efficiency of primary health care. Recently, many online medical question–answer services have been developed that connect the patients with relevant medical consultants based on their questions. Considering the linguistic variety in their question, social background identification of patien...
Conference Paper
Rainwater harvesting is one of the most promising alternative sources of fresh water, particularly in countries with abundance of rainfall all year round, and this is especially important for the agricultural sector, which traditionally requires plenty of water. This work studies the feasibility of implementing a rainwater harvesting system for an...
Conference Paper
With water and electricity as important scarce resources, it is important to conserve them and raise awareness on their usage, and as much as possible, avoid wastage. One way of conserving these valuable resources is by implementing a system that is able to monitor water and electricity usage, on an appliance level. This paper proposes a low-cost u...
Article
Modernization and technological advancement have made smart and convenient living environments, including smart houses and smart cities, possible, by combining the Internet of Things (IoT), data, and internet-based services over various communication protocols. IoT is the next generation of the Internet. However, commonly resource-constraint IoT de...
Article
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Modern agriculture incorporated a portfolio of technologies to meet the current demand for agricultural food production, in terms of both quality and quantity. In this technology-driven farming era, this portfolio of technologies has aided farmers to overcome many of the challenges associated with their farming activities by enabling precise and ti...
Article
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Square photonic crystal fibre (PCF) is proposed in this study using the principle of the golden ratio; by taking inspiration from nature. Simulations and analyses of the proposed design are used to examine different optical properties. Research findings show that the proposed square photonic crystal fibre exhibits a flattened chromatic dispersion,...
Preprint
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Despite substantial advances in network architecture performance, the susceptibility of adversarial attacks makes deep learning challenging to implement in safety-critical applications. This paper proposes a data-centric approach to addressing this problem. A nonlocal denoising method with different luminance values has been used to generate advers...
Article
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Organic waste management is a major global challenge. It accounts for a significant portion of waste that ends up in landfills, where it gradually decomposes and emits methane, a harmful greenhouse gas. Composting is an effective method for potentially solving the problem by converting organic waste into valuable compost. Despite many studies focus...
Article
A heptagonal core and hexagonal cladding Porous Core Photonic Crystal Fiber (PC-PCF) is proposed for terahertz wave guidance. Important transmission properties including confinement loss, effective material loss (EML), and core power fraction are investigated by using the Finite Element Method (FEM) in COMSOL Multiphysics simulation software. At an...
Article
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Article Info ABSTRACT Over the years, audio signal processing has grown significantly in terms of signal analysis and classification. There have been several proven evidences that it can be used to solve many issues related to environmental monitoring applications, especially in wildlife management and conservation-related projects. Since birds are...
Article
This paper discusses four heart sound segmentation (HSS) methods: Wavelet transform, Fractal decomposition, Hilbert Transform, and Shannon Energy Envelogram, in order to identify the different cardiac sounds. Many research studies related to heart signal analysis, have adopted these methods to give high heart sound segmentation results, especially,...
Article
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The objective of this study is to convert normal aerial images into underwater images based on attenuation values for different water types by utilizing the image formation model (IFM) with Jerlov water types. Firstly, the depth values are derived from RGB-D images. If the depth information is not available, the values between 0.5 m to 10 m are cho...
Article
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Transfer learning allows us to exploit knowledge gained from one task to assist in solving another but relevant task. In modern computer vision research, the question is which architecture performs better for a given dataset. In this paper, we compare the performance of 14 pre-trained ImageNet models on the histopathologic cancer detection dataset,...
Article
Identifying the social background of an unknown speaker by speech accent has multiple applications including in forensic profiling and adaptation of speech recognition. The most effective accent classification models based on phoneme pronunciation require the presence of certain phonemes in the test speech and hence, are applicable only for a longe...
Article
Identification of bird species from their sounds has become an important area in biodiversity-related research due to the relative ease of capturing bird sounds in the commonly challenging habitat. Audio features have a massive impact on the classification task since they are the fundamental elements used to differentiate classes. As such, the extr...
Article
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Ethanol, methanol and water are polar solvents with similar physical properties albeit contrasting chemical properties. Therefore, it is essential to provide accurate and reliable methods for detecting these liquids. In this paper, a novel liquid infiltrated photonic crystal fibre for ethanol, methanol and water sensing is introduced. The novel str...
Article
In cyberspace, a large number of Internet of Things (IoT) devices from different manufacturers with heterogeneous functionalities are connected together. It is challenging to identify all these devices in an IoT ecosystem. The situation becomes even more complicated when the devices come from the same manufacturer and of similar types due to their...
Preprint
Full-text available
Transfer learning allows us to exploit knowledge gained from one task to assist in solving another but relevant task. In modern computer vision research, the question is which architecture performs better for a given dataset. In this paper, we compare the performance of 14 pre-trained ImageNet models on the histopathologic cancer detection dataset,...
Article
Full-text available
Recent United Nations high-level dialogue on energy, which had emphasized on energy usage and environmental protection, has renewed commitments by different countries on the adoption of electric vehicle (EVs). This paper aims to analyze the economic feasibility of establishing electrical charging stations, which is an important factor for the wide...
Article
Full-text available
Underwater images are very much different from images taken on land, due to the presence of a higher disturbance ratio caused by the presence of water medium between the camera and the target object. These distortions and noises result in unclear details and reduced quality of the output image. An underwater image restoration method is proposed in...
Conference Paper
Full-text available
Owing to the ever-increasing world population it makes a doubt about feeding billions of people, as to the amount of current rate of agricultural food production, where it often hindered by many natural facts such as droughts, climate changes, floods, pests, and disease carriers and so on. Apart from that tendency towards traditional farming method...
Article
Coronavirus or COVID-19 has been declared a global pandemic, spreading to most countries, infecting millions of people and causing millions of deaths worldwide. The virus directly affects the respiratory system, and causes many symptoms, including fever, shortness of breath and cough. In more severe cases, it can cause pneumonia. Early detection of...
Article
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Underwater images are extremely sensitive to distortion occurring in an aquatic underwater environment, with absorption, scattering, polarization, diffraction and low natural light penetration representing common problems caused by sea water. Because of these degradation of quality, effectiveness of the acquired images for underwater applications m...
Conference Paper
Ankle sprains are amongst the most prevalent musculoskeletal system injuries, impacting athletes of all ages and all sporting activities, with most ankle sprains resulting from stress during inversion, plantar flexion, or supination of the foot. One method of simulating ankle sprain motion is through sub-injury trials using a platform that can forc...
Article
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The water medium is not particularly conducive for the acquisition of underwater images. This is due to its nature; with the presence of small floating particles in the water medium, causing the scattering of light and attenuation of wavelength, as well as the loss of light, especially in deep water environment. These issues make the captured under...
Article
Full-text available
Bird classification using audio data can be beneficial in assisting ornithologists, bird watchers and environmentalists. However, due to the complex environment in the jungles, it is difficult to identify birds by visual inspection. Hence, identification via acoustical means may be a better option in such an environment. This study aims to classify...
Article
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The pressure pain threshold (PPT) is a useful tool for evaluating mechanical sensitivity in individuals suffering from various musculoskeletal disorders. The aim of this study is to investigate PPT at the heel area in order to assist in the design of orthotic shoes for sufferers of heel pain due to a calcaneal spur. The size and location of the cal...
Article
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The success of supervised learning techniques for automatic speech processing does not always extend to problems with limited annotated speech. Unsupervised representation learning aims at utilizing unlabelled data to learn a transformation that makes speech easily distinguishable for classification tasks, whereby deep auto-encoder variants have be...
Article
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A novel liquid-infiltrated photonic crystal fiber model applicable in liquid sensing for different test liquids—water, ethanol and benzene—has been proposed. One core hole and three air hole rings have been designed and a full vector finite element method has been used for numerical investigation to give the best results in terms of relative sensit...
Article
Full-text available
With the growth of wireless network technology-based devices, identifying the communication behaviour of wireless connectivity enabled devices, e.g. Internet of Things (IoT) devices, is one of the vital aspects, in managing and securing IoT networks. Initially, devices use frames to connect to the access point on the local area network and then, us...
Chapter
Due to the rapid proliferation in low-power autonomous wireless electronic systems and gadgets, energy harvesting has gained growing attention over the last couple of years. A wireless system is typically a wireless sensor node (WSN) which comprises a sensor, processing circuit, wireless communication module, microcontroller, on-board memory, and a...
Article
An intelligent support system is needed to assist in the identification of abnormalities of a human heart. The integration of signal processing with machine learning techniques is a new research trend in the studies of heart sound analysis. This paper proposes a heart sound feature dimension reduction and classification methods using supervised mac...
Article
Full-text available
The current research in wearable electronics is trending towards miniaturization, portability, integration, and sustainability, with the harvesting of biomechanical energy seen as a promising route to improve the sustainability of these wearable electronics. Efforts have been made to prolong operational life of these harvesters, to overcome energy...
Article
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Electric vehicles are a leading candidate in the clean energy market. This paper aims to analyse the feasibility of the deployment of electric buses (EB) based on the existing bus routes in Brunei, by the use of life cycle cost analysis and the analysis of the parameters that influence the overall life cycle cost. The findings from the study reveal...
Article
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Water is a quintessential element for the survival of mankind. Its variety of uses means that it is always in a constant state of demand. The supply of water most primarily comes from large reservoirs of water such as lakes, streams, and the ocean itself. As such, it is good practice to monitor its quality to ensure it is fit for human consumption....
Article
The terahertz regime lies between microwave and infrared ranges, taking up a substantial portion of the electromagnetic spectrum. Due to its unique features, terahertz radiation has received significant attention from researchers. This paper reviews the current status of Porous Core Photonic Crystal Fibers (PC-PCF) for terahertz propagation. While...
Article
Full-text available
A simple hexagonal lattice photonic crystal fiber model with liquid-infiltrated core for different liquids: water, ethanol and benzene, has been proposed. In the proposed structure, three air hole rings are present in the cladding and three equal sized air holes are present in the core. Numerical investigation of the proposed fiber has been perform...
Article
Full-text available
Recently, there has been increasing interest in the use of tracking devices for patients, sportsmen, children, as well as vehicles and robotics applications, for various reasons. Low cost Global Positioning System (GPS) device has been popular due to the increase in accuracy of this system as well as improved affordability. This paper designs a low...
Article
Full-text available
Underwater images often undergo distortions from scattering, absorption, colour loss, diffraction, polarisation, and varying attenuation depending on the light frequency, due to the water medium. This study answers problems associated with the recovery of underwater images, by developing novel depth map estimation which may be used as an intermedia...
Article
Full-text available
The liquid-infiltrated photonic crystal fibre (LI-PCF) is proposed for guiding terahertz radiation. Geometrical asymmetry is achieved by introducing a large ellipse in the core. By filling the ellipse with liquid cocaine, the optical properties of the photonic crystal fibre (PCF) are theoretically examined using finite element method-based COMSOL m...
Article
Full-text available
Underwater images often undergo distortions from scattering, absorption, colour loss, diffraction, polarisation, and varying attenuation depending on the light frequency, due to the water medium. This study answers problems associated with the recovery of underwater images, by developing novel depth map estimation which may be used as an intermedia...
Article
Full-text available
As wearable microelectronics become more ubiquitous, and the size and power requirements of such devices decrease, there is increasing research interest in harnessing power from ambient environmental sources through embedded systems as alternative to battery replacements. Accordingly, a multimodal hybrid piezo-electromagnetic insole energy harveste...
Article
Full-text available
A novel liquid-core photonic crystal fibre (LC-PCF) based on the Zeonex substrate has been proposed for sensing the varying concentration of kerosene in petrol and diesel fuels in terahertz frequencies. Fuel sample infiltration is achieved by designing a single hexagon in the porous core region. The LC-PCF has been numerically studied using a finit...
Article
Full-text available
A thorough modal characterization, centred on the full vectorial finite element method (FEM) has been used to model and numerically investigate a porous core photonic crystal fibre (PC-PCF), which may potentially be integrated into Terahertz (1012Hz) compact systems. The proposed fibre consists of a rotated hexagonal core surrounded by a convention...
Preprint
Device identification is the process of identifying a device on Internet without using its assigned network or other credentials. The sharp rise of usage in Internet of Things (IoT) devices has imposed new challenges in device identification due to a wide variety of devices, protocols and control interfaces. In a network, conventional IoT devices i...
Article
Full-text available
Wireless sensor nodes (WSNs) and embedded microsystems have recently gained tremendous traction from researchers due to their vast sensing and monitoring applications in various fields including healthcare, academic, finance, environment, military, agriculture, retail, and consumer electronics. An essential requirement for the sustainable operation...
Article
Full-text available
Harvesting biomechanical energy is a viable solution to sustainably powering wearable electronics for continuous health monitoring, remote sensing, and motion tracking. A hybrid insole energy harvester (HIEH), capable of harvesting energy from low-frequency walking step motion, to supply power to wearable sensors, has been reported in this paper. T...
Article
A highly birefringent photonic crystal fibre, with horizontal arrangement of three elliptical air holes in the core and hexagonal arrangement of circular air holes in the cladding, has been proposed for transmission of terahertz waves. Guiding properties of the fibre have been rigorously investigated using finite element method with perfectly match...
Article
Full-text available
The generation and integration of photovoltaic power plants (PVPPs) into the utility grid have increased dramatically over the past two decades. In this sense, and to ensure a high quality of the PVPPs generated power as well as a contribution on the power system security and stability, some of the new power quality requirements imposed by differen...
Article
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An octagonal 5-layer air-hole dispersion compensating photonic crystal fibre is presented in this paper. The design is based on the golden ratio principle where the pitch to air hole diameter ratio is kept at 1.618. Numerical analysis using full-vector Finite Element Method (FEM) with a perfectly matched layer boundary CONDITION is used to investig...
Article
Full-text available
A novel Porous Core Photonic Crystal Fibre (PC-PCF) with high birefringence and extremely low transmission loss is proposed and investigated. High birefringence is achieved by using high resistivity float zone silicon as background dielectric material. Simulation results demonstrate that the proposed PC-PCF has a birefringence above 0.9, Effective...