Nidhal Abdulaziz

Nidhal Abdulaziz
University of Wollongong | UOW ·  School of Electrical, Computer and Telecommunications Engineering (SECTE)

About

32
Publications
7,201
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214
Citations
Introduction

Publications

Publications (32)
Article
Full-text available
Audiograms are used to show the hearing capability of a person at different frequencies. The filter bank in a hearing aid is designed to match the shape of patients’ audiograms. Configuring the hearing aid is done by modifying the designed filters’ gains to match the patient’s audiogram. There are few problems faced in achieving this objective succ...
Article
Full-text available
The current practice of adjusting hearing aids (HA) is tiring and time-consuming for both patients and audiologists. Of hearing-impaired people, 40–50% are not satisfied with their HAs. In addition, good designs of HAs are often avoided since the process of fitting them is exhausting. To improve the fitting process, a machine learning (ML) unsuperv...
Article
Full-text available
Recent methodologies for audio classification frequently involve cepstral and spectral features, applied to single channel recordings of acoustic scenes and events. Further, the concept of transfer learning has been widely used over the years, and has proven to provide an efficient alternative to training neural networks from scratch. The lower tim...
Preprint
Full-text available
Access to informative databases is a crucial part of notable research developments. In the field of domestic audio classification, there have been significant advances in recent years. Although several audio databases exist, these can be limited in terms of the amount of information they provide, such as the exact location of the sound sources, and...
Article
The study of how students learn technical material has become increasingly significant. It has been acknowledged over a period of time that students from different backgrounds have different learning styles and that alternate teaching methodology and styles can aid the learning process. The diverse environment offered within educational institution...
Article
Full-text available
Wireless internet access technology can experience a major revolution through the use of breakthrough technology of Visible Light Communication (VLC) or Li-Fi (light fidelity) which could promise much higher data rates and better security and integrity of the data at the physical layer. There are many challenges being faced when visible light commu...
Article
Full-text available
This paper is focused on the communication scheme and its integration of Power Line Communication (PLC) and Visible Light Communication (VLC) systems. As the power line communication is becoming more popular in the last mile and home networking. In order to make the Power Line Communication (PLC) based networks more practical by having mobility at...
Article
Full-text available
This paper presents the implementation of vertical and horizontal integration of engineering education in an early design project. In this project, multi discipline first year engineering students were asked to design, build and test a device which can generate electricity from green energy sources. The project is embedded in the undergraduate mech...
Conference Paper
This paper investigates the relationship between attendance and overall academic performance of students at a newly established research focused university located in Central Asia. The first intake of the School of Engineering at Nazarbayev University consisted of 138 students: 88 male and 50 female. Student attendance was noted at every session du...
Conference Paper
The simulation of an artificial pacemaker is presented in terms of digital waveforms which represent the analogous heartbeat and its verification using Verilog coding. The output will be in terms of any rectifications required in the simulation and its final results will conclude in a regular heartbeat with pacing if required. The simulation input...
Article
Full-text available
Recent scholarship references indicate that integration of the student body can result in an enhanced learning experience for students and also greater satisfaction. This paper reports the results of a case study whereby mechanical engineering students studying at a newly established branch campus in Dubai of a British university were exposed to ve...
Article
In this paper a pneumatic autonomous glass climbing robot has been used. The idea was to design and manufacture a small size and light weight glass climbing robot for cleaning purposes. The design consists of four active (scanning) type suction modules, two servo motors, two free wheels, a cleaning mechanism, and a programmable onboard microcontrol...
Conference Paper
This paper demonstrates the latest Smart Grid and Demand Response pilot projects results and achievements in UAE. It also identifies the challenges that require the introduction of Smart Grid, the investigation of the life cycle cost/benefits, the analysis of Smart Grid deployments and finally, to define the road map of Smart Grid and the pillars t...
Conference Paper
The aim of this paper is to conduct a study, to identify the potential and the prospects of renewable energy in Pakistan. This will be done by highlighting the present energy situation and quantitatively analyzing the ways and techniques available today to fulfill the energy gap. And hence, the ultimate concern of this paper would help identify the...
Article
A new slope line code for information transmission and storage has been proposed. The line code operates on the principle of slope coding. Two alternative slopes are used to transmit or store the binary information 1 s and 0 s. The decoder extracts the binary information from the received multilevel signal using slope comparison technique with slop...
Article
Full-text available
A novel slope line code for data transmission and storage on digital communication systems has been proposed. The new line code operates on the principle of slope coding. The slope encoder transmits alternative slopes (stair-step-like pulses) for the transmission of the 1s and 0s of the input binary data. The decoder detects the received signal usi...
Conference Paper
The power spectral density of the H-ternary line code is investigated in this paper. Accurate simulation results are extracted from a simulation model that generates and encodes very long P-N binary sequence. The simulation results are compared with that of the theoretical results obtained from the analytical model. Both results almost fit with eac...
Article
Full-text available
The design method of the H-ternary line decoder is given. A simulation model of the designed decoder is realised using Circuitmaker package. This is supplemented with a prototype model for operational verification purpose. The decoder consists of a design of the clock recovery circuit. The latter is an essential part for synchronising the decoder w...
Article
Full-text available
A data embedding technique is proposed for embedding a significant amount of data in digital images while retaining high perceptual quality. The scheme employs digital communication techniques to achieve high robustness to standard image processing operations. Information is embedded in the wavelet domain by modifying selected wavelet coefficients...
Article
In this paper we present the effect of channel coding on the performance of data hiding in images. The bit error rate (BER) associated with the watermark decoding is obtained when convolutional and concatenated codes are employed. The approach is adapted to make retrieval possible for applications where the original host is not available to the rec...
Conference Paper
This paper presents the application of source and channel coding techniques for data hiding in still images. The hidden data is source coded by vector quantization, and the indices obtained in the process are embedded in the host signal using discrete wavelet transform and channel coding. The objective of this paper is to evaluate the improvement t...
Conference Paper
This paper presents an approach for video embedding based on the discrete wavelet transform and channel coding. We address the problem of embedding logos and small images within a host video. The algorithm starts with transforming each image or frame of the video sequence into the discrete wavelet domain where their coefficients are grouped into ve...
Conference Paper
In this work, a robust data embedding scheme, which uses a source and channel coding framework for data hiding is implemented. The data to be embedded, referred to as the signature data, comprises of two different data types, text messages and images as the signature data. The first data type used was the text message, where the text message is con...
Conference Paper
This paper proposes an algorithm of data hiding for an image signal based on the wavelet transform and error-correcting codes. The data to be embedded, referred to as the signature data, are coded using error-correcting codes and the resulting code is hidden into the wavelet transformed coefficients of the host image in a vector based perturbation....
Conference Paper
This paper describes a robust data embedding scheme, which uses a source and channel coding framework for data hiding. The data to be embedded, referred to as the signature data, is source coded by vector quantization and the indices obtained in the process are embedded in the wavelet transform coefficients of the host image. Transform coefficients...
Conference Paper
Image coding is one of the most important applications of wavelets. There has been increasing number of reports each year since the late 1980's on the design of new wavelet coders and variations to existing ones. In this paper several wavelet-based coders are compared in their performance with still images. The aim of this work is to choose a suita...

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