bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of RTV coating on the electrical performance of porcelain insulator string under dry condition
Authors: Othman M , Isa M , Kasa Z C M , Mazlee M N , Piah M A M 
Published: March 2020

Abstract
Pollution flashover is one of the primary reasons cause to power system failure in Malaysia. The presence of accumulation on the porcelain insulator surface reduces the electrical performance and also causes the failure of insulation in transmission and distribution lines. This research presents a study on the effect of Room Temperature Vulcanize (RTV) coating on the performances of a string porcelain insulator and their impact on environmental contamination. An attempt has been made to simulate the electric field distribution of 33 kV insulators using the finite element method (FEM). From the simulation results, the maximum electric field distribution is obtained at the pin insulator of a clean insulator, while the cap insulator indicated the minimum electric field. With the existence of the contamination layer, the electric field distribution of the porcelain surface results in a reduction trend.
Digital photonics parity bit error detection system
Authors: Uddin M. Rakib , Law F. K. 
Published: March 2020

Abstract
The optical communication medium is emerging to be one of the potential replacements to the current electronic systems widely used today. This is due to its much higher data transmission with extremely low loss properties, not to mention that it is almost invulnerable to electromagnetic interference. In this paper we demonstrated our proposed design of a digital photonic parity bit error detection system, one of the fundamental digital electronic circuits used during long-range digital signal transmission. Silicon photonic micro-ring resonators are used as its core component, where each of the rings operates as a digital logic XOR mode, by taking advantage of the resonance shifting properties of the silicon waveguide. Dynamic response characterization has been carried out by simulating the proposed circuits at the data rate of 1Gbps, with the data sampling rate of 1.6THz, and clear timing waveform was generated to show that the proposed circuit operates as the parity bit error detection system.
Characterizations of Cascaded Micro-ring Resonators
Authors: Uddin M Rakib , Yazid M , Law F K , Rashidi C B M 
Published: March 2020

Abstract
The effects of cascading the ring resonator to form wavelength filters is a major focus of this paper, the results tested between the two methods of cascading the rings are the trends between the two types of cascaded rings for the ON-OFF ratio where the serially cascaded method was found to make better filters, -3dB bandwidth which is the width of the pass-band of through-port and drop-port where both the two cascading methods have the same effect as the numbers of rings increases. The delay times of the output for use in telecommunication are also simulated illustrating that only the parallel cascaded method provides this property.
Beam Steering Monopole Antenna for Low Power Wireless Communication in WSN
Authors: Mahdir N A F , Osman M N , Sabapathy T , Jusoh M , Zainudin N A F M 
Published: March 2020

Abstract
Antenna for wireless sensor networks (WSN) application need to satisfy a number of additional properties like antenna efficiency. Since there are many WSN nodes, the use of low cost and high efficient antenna is highly important. Therefore, in this paper, a beam steering antenna resonate at 2.4 GHz with monopole element by using parasitic array technique is proposed. The parasitic array element is introduced to achieve a better gain and acts as a reflector to steer the beam to the desired degree of angles. The structure of the proposed design consists of monopole antenna as the radiating element, and to parasitic patches with the same dimension of monopole are placed next to the radiating patch. Two switches (PIN diode) are used and embedded at the back of the structure. By activating and deactivating of the switches (ON or OFF), the parasitic is either grounded or disconnected from ground. Consequently, depending on the switches configuration, the beam pattern can be steered two direction angles which ±25° left or right. The simulated and measured results are presented to demonstrate the performance of the proposed antenna.
Implementation of Particle Swarm Optimization and Genetic Algorithms to Tackle the PAPR Problem of OFDM System
Authors: Abdalmunam A , Anuar MS , Junta MN , Nawawi NM , Noori A 
Published: March 2020

Abstract
A multi-carrier modulation technique, which represented in this paper as orthogonal-frequency-division-multiplexing (OFDM), ensured wireless high-speed data transmission. The transmission of modulated symbols uses a large number of subcarriers in the OFDM system. Consequently, the OFDM signals have an extended dynamic range, or a high output power peak envelope fluctuation or high PAPR. To mitigate the PAPR, in this paper, we implement two algorithms to reduce the output power envelope fluctuation of the OFDM system, namely PSO and GA. Also, the PTS method and PAPR in OFDM systems difficulty described briefly. We present an OFDM system through the use of conventional PTS based on PSO and GA. The simulation result shows that both evolutionary approaches outperform the conventional PTS OFDM in-terms of reducing the Peak-to-Average-Power-Ratio (PAPR). Furthermore, the performance of the PSO algorithm is found to be better than GA in-terms of its simplicity and the time execution. On the other hand, the GA algorithm outperforms the PSO and the conventional OFDM, in terms of the PAPR reduction.
A Mini-Review of Coupled Convection-Diffusion Equations in a Fixed-Bed Adsorption
Authors: Supian Nurhusnina Mohd , Halif Norzilah Abdul , Rusli Nursalasawati 
Published: March 2020

Abstract
Environmental contamination triggered by dyes has gained global attention. Industrial effluent of dye in high concentration into the rivers must be reduced to minimise the harmful effect on the quality of water that threatens human health. The removal of dye from wastewater is a significant step in addressing the problem of dye emission which can be achieved through adsorption separation technologies. In the most adsorption process, the adsorbent is in contact with fluid in a fixed bed. The performance of adsorptive separation of dye can be predicted through a fixed bed mathematical model which consists of coupled partial differential equations for optimizing the design and operating conditions. This paper presents a mini-review of mathematical modelling of fixed-bed adsorption of dye. The discussions are limited to the used of single component-dye separation in, convection-diffusion equations coupled with Langmuir isotherm. Besides, the numerical methods used for solving the convection-diffusion equations are also discussed in this paper.
Design of C-band Low-noise Amplifier (LNA) Using E-pHEMT Device for Satellite Communication System
Authors: Kamsaini F , Razalli M S , Ibrahim S Z , Ilyas M Z 
Published: March 2020

Abstract
A low-noise amplifier (LNA) plays an indispensable role in a communication system for amplification purposes at the transceiver. LNA design in radio frequency (RF) circuits involve various key attributes, namely noise figure (NF), gain, and power consumption. This paper focuses on the design of a C-band LNA for satellite communication system with a centre frequency of 6 GHz using ATF-55143 enhancement-mode pseudomorphic high-electron-mobility transistor (E-pHEMT) technology. The LNA performance is augmented by adding inductors to the drain and gate of the ATF-55143 transistor. Smith chart impedance matching technique is implemented to foster a more precise matching for input and output of the LNA. In this work, the C-band LNA is biased at VDS of 2.7 V and IDS of 10 mA. Electromagnetic (EM) software is used to design and simulate the performance of the LNA circuit layout. Simulation results indicate NF of 2.66 dB and power gain (S21) of 12.29 dB. The LNA consumes 27 mW from a 3 V DC supply.
Design and Development of GreedLea Routing Protocol for Internet of Vehicle (IoV)
Authors: Omar Normaliza , Yaakob Naimah , Husin Zulkifli , Elshaikh Mohamed 
Published: March 2020

Abstract
In Internet of Vehicle (IoV), each vehicle uses a routing protocol to find a path for sending its messages to the last destination. Nowadays, the studies of IoV routing protocols and their impact on the performances of network with different network scenarios has significantly developed a precise understanding of the requirements and goals for designing an IoV routing protocol. In IoV, topology of network diverse promptly which leads to the fragmentation of network, frequent route breakage, and packet loss. This paper discusses on the development of an integrated routing protocol for IoV scenario. Greedy Perimeter Stateless Routing (GPSR) and Reinforcement Learning (RL) is integrate to determine a route based on demand. Then, the mobility model has been designed to reduce road collision. Lastly, traffic management also been focused to deal with the loss, mobility and network delay to meet the application demands.
Optimizing Speedup on Multicore Platform with OpenMP Schedule Clause and Chunk Size
Authors: Khalib Z I Abdul , Ng H Q , Elshaikh M , Othman M N 
Published: March 2020

Abstract
Despite the description of schedule type which can be easily found at any OpenMP reference material, little is known about the effect of different schedule type and chunk size on the parallel performance of shared memory multicore processor. Literature shows that performance analysis on different multicore platform overlooked the effect of different schedule type and chunk size, where often it was not explicitly specified. Hence, default assignment of the loop iterations among threads is assumed. By default, static schedule is used and size of chunk which is the ratio of total number of iteration to the number of threads is implemented. This research analyses the effect of different schedule type and chunk size on speedup achieved of different shared memory multicore platform under regular workload. Apart from that, the performance gain obtained after turning on/off certain multicore technologies and after turning on/off selected number of active cores per processor is also analysed. Results shows that different multicore technology exhibit different speedup value under different combination of schedule type and chunk size. Apart from that, it also observe that different multicore platform is better than the other in terms of speedup as the number of cores are increased.
Critical Review: Adaptive Pole Assignment PID Controller on DC-DC Converters
Authors: Husna A W N , Mat M H , Yasin M N M , Jusoh M , Irwan Y M , Rahim M S Abdul , Esa S Md 
Published: March 2020

Abstract
Recently, control usages of DC-DC converters have been widely investigated particularly in renewable energy; as the primary sources. Discovering the most appropriate control method to be applied in DC-DC converter topologies is the most significant interest of research and development in this field. Thus, the review is carried out in selecting a control method that capable to improve the functioning of the converters as well as reducing the effect of disturbances and load variances
Design and Implementation of Lifting Wavelet Transform Using Field Programmable Gate Arrays
Authors: Taha T B , Ngadiran R , Ehkan P L 
Published: March 2020

Abstract
Lifting Wavelet transform (LWT) has an extensive usage in different image processing applications as image compression and information hiding. LWT is considered a good solution for hardware designs as it relies only on integer calculations while applying the wavelet transform. In this paper, an FPGA design and implementation of LWT is presented, the implementation is achieved using VHDL coding without importing off-shelf components which make the proposed design applicable to a wide range of devices. The design is based on parallel execution to perform LWT implementation with real time response. The design utilized 421 logic registers of DE2 Cyclone II (EP2C35F672C6) FPGA device with 151.91MHz frequency.
Performance improvement of multi access OCDMA system based on a new zero cross correlation code
Authors: Alayedi M , Cherifi A , Hamida A F , Rashidi C B M , Bouazza B S 
Published: March 2020

Abstract
In this paper, a novel zero cross correlation (ZCC) code is proposed for spectral amplitude coding-optical code division multiple access (SAC-OCDMA) systems. The code construction method starts from the identity matrix and has several benefits summarized in both the code simplicity and flexibility. The proposed code presents also an adapted (or accepted) code length for SAC-OCDMA systems and a high SNR value that reaches respectively 3.18 and 1.84 times of the system capacity comparing to other existed codes such as modified quadratic congruence (MQC) and modified double weight (MDW) codes.
Potential of developing an energy self-sufficient village through mini hydro powerplant technology
Authors: Aminullah B , Wirawan R 
Published: March 2020

AbstractNowadays, electricity is one of the most important need for the human life. However, in developing countries, there are some areas that are not fully covered by the electrical power. The high cost of distribution is one of the reasons behind the problem. More efforts are needed to distribute the electricity to a remote area, such as a far mountainous region. On the other hand, there is a potential to provide electrical power from a river through the development of mini-hydro powerplant technology. In this study, potential of water power in a mountainous region of West Java Province, Indonesia, is measured. The measurements were taken in three different places of river, divided by the distance from a waterfall. As a result, it is found that the potential power obtained from the rivers are ranged between 17-137 kW, which is enough for lighting up 37-304 houses, indicating there is a potential of developing an energy-sufficient village through mini-hydro powerplant technology.
Pilot spacing controller in orthogonal frequency division multiplexing systems
Authors: Hassan M S Abu , Ahmad R B , Shoib N 
Published: March 2020

Abstract
As the backbone of the fifth generation, 5G communications, Orthogonal Frequency Division Multiplexing, OFDM is seen to be reliable in addressing Inter-symbol Interference, ISI issues as well as providing high-speed access to broadband. Channel estimation and tracking are generally carried out by transmitting known pilot symbols in given positions of the frequency-time grid. However, the use of a fixed amount of pilot for all channel circumstances is hugely detrimental. Several methods, especially on block-type and comb-type pilot arrangement, have presented. In this paper, the method of determining the pilot space depends on the current channel quality. The proposed technique focused on improving estimation and bandwidth in time-varying and frequency-selective fading channels without increasing the complexity and sacrifice the bandwidth efficiency of the OFDM system.
Development of a synchronverter for a grid connected photovoltaic system
Authors: Liaw M J Y , Sarimuthu C R 
Published: March 2020

Abstract
As global population has grown exponentially since the past decade, the demand for a sustainable framework for cleaner, greener and stable energy production is becoming more important for a holistic society. Among multiple renewable energy sources, solar power is highly favoured to dominate the market due to improvements in solar energy conversion efficiency and reduction in production cost. Thus, many transmission grids will observe a high penetration of inverters as an interface between solar panels and the AC transmission grid. Consequently, inverter-dominated transmission grid will face issues with maintaining and achieving overall grid stability due to the characteristics of inverters which are composed of mainly solid state devices (SCR, MOSFETS or IGBTs). This is due mainly to the lack of rotational inertia, which is typically contributed and maintained by traditional synchronous generators when the stability of the transmission grid is disturbed. For this reason, conventional inverters can potentially be exploited to mimic the characteristics of synchronous generators to stabilize the transmission grid. Thus, this project is motivated to design a ‘smart’ inverter or synchronverter which can operate on islanded mode while integrated with solar panels. This project focuses on developing and prototyping a working three-phase inverter model using a Raspberry Pi microcontroller with Simulink support. Bipolar Sinusoidal Pulse Width Modulation (SPWM) technique is used to create the sinusoidal output waveform with a fixed frequency of 50Hz. The output waveform will also have a Total Harmonic Distortion (THD) of less than 5%. A Proportional-Integral (PI) controller is also implemented to ensure that amplitude and frequency of output sinusoidal remains constant. In this work, simulation of a three-phase inverter is done using Simulink (MATLAB) to validate the performance of the inverter (hardware prototype). The developed hardware prototype is experimentally tested by integrating with 1000W solar panels.
A cloud-based automated parking system for smart campus
Authors: Yee O C , Yaakob N , Elshaikh M , Azahar F 
Published: March 2020

Abstract
Finding a vacant parking space is becoming a real problem especially in areas with limited parking spots such as airports, shopping centres, offices, as well as universities. Searching for available parking slots is normally time consuming and always results in frustration especially when time is the major constraints. Moreover, vacant parking is hard to be noticed due to unsystematic parking system. This will result in longer searching time which can also lead to traffic congestion. In addition, lack of security enforcement on cars entering universities campus is also one of the main issues contributing to insufficient parking spaces. This might cause some unauthorized cars to take opportunity to get inside the campus without any approval and consent from security department. Therefore, A Cloud-based Automated Parking System for Smart Campus is developed in this project. It consists of a sub-system that is developed to display availability number of parking slots so that it will assist authorize users to easily find their parking spots. The proposed system can also recognize car plate number through Automated Car Plate Recognition (ACPR) mechanism which is located at the campus main entrance gate to avoid unauthorized cars from getting in. This has strengthened security level inside campus and ensure the safety of students and staffs. All the information collected are sent into the cloud and stored inside a database system. The information regarding vacant parking can also be displayed using the developed mobile apps.
Development of system identification from traditional concepts to real-time soft computing based
Authors: Kwad A M , Hanafi D , Omar R , Rahman H Abdul 
Published: March 2020

AbstractAdvancement in computer and data acquisition technology gave the system identification a push forward, especially in the speed of the process and parallel calculation techniques. This article reviews the progress of system identification methods and techniques from traditional to modern methods and from offline to fast on-line analysis through previous years till these days. It takes into account part of artificial intelligence techniques (soft computing techniques), primarily artificial neural networks methods, for off-line system data analysis and real-time system identification, including the linear and non-linear issues. This study will provide a very concise survey for researchers about the development of system identification, its implementations, and techniques that have been used.
Implementation of Li-Fi based home automation system
Authors: Ismail S , Ahmad N , Arshad I D 
Published: March 2020

Abstract
This paper presents an Implementation of Li-Fi based home automation system prototype. This system was develop to verify the effect of LED types on VLC transmission. LED is used to transmit the input data information to the receiver LDR through visible light communication (VLC). Arduino microcontroller was used to retrieve information from the temperature sensor, light sensor, PIR sensor and MQ2 gas sensor. The output data of sensors were sent to LDR by LED. The result demonstrates that the colour types of LED has an effect on transmission distance and the voltage of LED is proportional to the distance. Red LED has better performance compared to others.
Plastic optical fibre power splitter for surface profiling of 3-D object
Authors: Mohamed-Kassim N Syafiqah , Abd-Rahman M Kamil 
Published: March 2020

Abstract
Single-mode fibre has established the intensity-based surface profiling application with the notable results such as surface topography of ancient stones and three-dimensional rigid-body shapes. However, cost and experimental handling has been the most common issue for single mode fibre related-applications. Thus, plastic optical fibre (POF) has become an alternative for surface structure monitoring due to its highly-multimode and larger cross-sectional area. Millions of light rays can be gathered and enhanced the light detection, aside from lower installation cost and offer easier handling of the fibre system. In this work, the operating principle and experimentation of the surface profiler on a reflective 3-D object is presented. The measurement of the profiler was investigated via a 0.7 dB low excess-loss, non-branching POF Y-shape power splitting coupler. The variation in light intensity reflected from the target surface provides details on the change in depth and thickness of the target. The 1-mm diameter POF end-facet provides excellent probing tip in measuring the diameter of 3-mm reflective spherical surface with good accuracy.
LaundryMama: Humanising Laundry Tasks using Laundry Management System and Laundry-On-Demand Mobile Applications
Authors: Mei Leong Yi , Ku Azir Ku Nurul Fazira , Ibrahim Siti Zuraidah , Azemi Saidatul Norlyana 
Published: March 2020

Abstract
Laundry Management System and Laundry-On-Demand Mobile Applications are presented in this paper. Using conventional laundry service method, customer is not informed about the laundry process stage, does not have option to arrange the preferred laundry pick up time for the deliveryman to pick up the unwashed laundry from the address provided by customer and the laundry ordering paper forms are often lost in transit between customer and admin. Therefore, a laundry management system software and laundry on demand mobile application is demanded to solve the problems. The software development is performed using an open source developing platform Android Studio IDE and Firebase Real-time Database, Authentication, Cloud Messaging and Cloud Storage. The method used to develop the software is waterfall modelling and two characters are involved, which is admin and customer. The two characters functions are separated in two different applications. A Laundry Management System Software is developed for admin to manage, make order and monitor the business. A Laundry-On-Demand Mobile Application is developed for customer to make order and monitor the order. These both applications can receive notification from each other. The data can be correctly written and read from Firebase Real-time database, Firebase Authentication, Firebase Cloud Storage. The developed software and mobile application are evaluated in term of its functionality.