Aznida Abu Bakar Sajak

ORCID: 0000-0003-2475-1047
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Research Areas
  • IoT-based Smart Home Systems
  • Water Quality Monitoring Technologies
  • IoT Networks and Protocols
  • Energy Harvesting in Wireless Networks
  • Terahertz technology and applications
  • Antenna Design and Analysis
  • IoT and Edge/Fog Computing
  • IoT and GPS-based Vehicle Safety Systems
  • Microwave Engineering and Waveguides
  • Wireless Body Area Networks
  • Smart Agriculture and AI
  • Municipal Solid Waste Management
  • Energy Efficient Wireless Sensor Networks
  • Millimeter-Wave Propagation and Modeling
  • Oil Palm Production and Sustainability
  • Healthcare and Environmental Waste Management
  • Advanced MIMO Systems Optimization
  • Antenna Design and Optimization
  • Recycling and Waste Management Techniques
  • Innovations in Aquaponics and Hydroponics Systems
  • Smart Grid Security and Resilience
  • Coconut Research and Applications
  • Blockchain Technology in Education and Learning
  • Wireless Power Transfer Systems
  • Electricity Theft Detection Techniques

University of Kuala Lumpur
2019-2024

University of Liverpool
2013-2017

In this letter, a novel flexible implantable loop antenna with complementary split ring resonators (CSRRs) is proposed and designed for biomedical telemetric applications. The has very wide bandwidth to cover the Medical Device Radiocommunications service (MedRadio 401-406 MHz) Industrial, Scientific (ISM 433.1-434.8, 868.0-868.8, 902.8-928.0 MHz 2.45 GHz) bands which support functions of wireless data transmission, power transfer saving (wakeup receiver). It optimized over two-step design...

10.1109/lawp.2015.2403952 article EN IEEE Antennas and Wireless Propagation Letters 2015-01-01

The integration of widely fluctuating distributed generation (such as photovoltaic panels, wind power, electric vehicles, and energy storage systems) puts the stability power technologies distribution structures in jeopardy. However, fundamental reason is that electrical supply demand ratio may not be balanced. An excess or scarcity electricity production consumption can disrupt system cause serious difficulties such voltage drops/rises and, extreme cases, outages. Energy management systems...

10.1155/2022/3358795 article EN cc-by International Transactions on Electrical Energy Systems 2022-10-21

Wireless Sensor Networks (WSNs) are a key component of Green IoT, as they play critical role in many applications. However, major challenge faced by WSNs is their limited energy capacity, which can impede effectiveness. To address this issue, harvesting techniques used to harness ambient and power the nodes, eliminating need for frequent battery replacements or recharging. This study proposes solar technique prolong lifespan each wireless sensor node network. The aim research assess impact...

10.37934/araset.40.1.3544 article EN cc-by-nc Journal of Advanced Research in Applied Sciences and Engineering Technology 2024-02-19

Abstract Electricity theft (ET), which endangers public safety, interferes with the regular operation of grid infrastructure, and increases revenue losses, is a significant issue for power companies. To find ET, numerous machine learning, deep mathematically based algorithms have been published in literature. However, these models do not yield greatest results due to issues like dimensionality curse, class imbalance, inappropriate hyper‐parameter tuning learning etc. A hybrid DL model...

10.1049/rpg2.12846 article EN cc-by-nc-nd IET Renewable Power Generation 2024-02-13

Internet of Things (IoT) Soil Monitoring based on Low Range (LoRa) Module for Palm Oil Plantation is a prototype that sends data from the sender to receiver by using LoRa technology. This realises implementation Industrial Revolution 4.0 in agriculture sector. Also, this uses TTGO development board Arduino with built-in ESP32 and LoRa, pH sensor moisture level as main components. The utilises communication between receiver. sensors will detect soil along level. then be sent receiver, where...

10.14569/ijacsa.2021.0120527 article EN International Journal of Advanced Computer Science and Applications 2021-01-01

In this paper a flexible loop antenna is proposed for biomedical bone implants in the Medical Device Radiocommunications Service (401-406 MHz) and Industrial Scientific (433-434.8 bands which probably first implantable that covers these bands. This has shown robust performance against up to 50 % of variations body dielectric properties. The main design considerations antennas comparison with corresponding muscle are also addressed paper.

10.1109/eucap.2014.6901898 article EN 2022 16th European Conference on Antennas and Propagation (EuCAP) 2014-04-01

<p>In July 2009, Government of Malaysia had launched Green Technology Policy as new initiatives from to handle greenhouse effect issue and energy usage through application green technologies development reduce carbon footprint. This project, Internet Things (IoT) Recycle Management System is an idea help the government in gearing nation towards this aim with a developed system or technology that support environment. For paper, intended cities are Putrajaya Cyberjaya areas since both...

10.11591/ijeecs.v15.i2.pp1037-1045 article EN cc-by-nc Indonesian Journal of Electrical Engineering and Computer Science 2019-08-01

This project introduces the design and development of IoT E-waste monitoring system to support Green City initiatives in real-time. The main objective this is an IoT-based recycle e-waste that will provide efficient solution electronics waste collection generation data. hazardous chemical components have potentially adverse impacts on ecosystems human health if not managed monitored properly. Hence, importance constantly monitor condition bin. measures delivers up-to-date information...

10.30880/ijie.2021.13.02.001 article EN International Journal of Integrated Engineering 2021-02-11

Abstract Internet of Things (IoT) is an idea and theory connecting billions devices enable them to exchange a massive amount information. Green IoT visualize the with improved energy efficiency. The overview challenges that were faced due excessive usage hungry given initially. research efficiency in had been presented extensively this paper. Authors some challenges, existing works, opportunities, future directions green IoT.

10.1088/1742-6596/1874/1/012012 article EN Journal of Physics Conference Series 2021-05-01

The LoRaWAN (Long Range Wide Area Network) is a new technology in Wireless System. This testbench project consists of Arduino Microcontroller, Dragino YUN Shield, and LoRa Shield to operate as the Gateway. Client requires Microcontroller LoRa/GPS Shield. will be powered by Client, it send GPS location information Gateway where received recorded its DataLog periodically. mobile while Server at stationary mode during experiment. testing evaluation done suburban urban scenarios. It was found...

10.1109/imcom48794.2020.9001689 article EN 2023 17th International Conference on Ubiquitous Information Management and Communication (IMCOM) 2020-01-01

Abstract IoT Real-Time Soil Monitoring based on LoRa for Palm Oil Plantation is a prototype that can send data to the receiver using technology. The used technology because it long range and low-cost SX1278 sensors as main components. It shows communication between sender of notifies user soil tilt temperature in real time via ThingSpeak platform. A must be attached at sender. then sends receiver. As received by receiver, will display serial monitor also receiver’s OLED. This easy use set up...

10.1088/1742-6596/1874/1/012047 article EN Journal of Physics Conference Series 2021-05-01

This project is using a recognition method to determine the plate number of rear part car, whenever car approaches gate entrance. A camera used capture image car. For allow access vehicle, must be registered and kept within database. Once verified, admin or security guard will open by pressing button on an app let pass with ease without needing special card gate. The objectives are develop license system that detects detection method, parking for payment fees, lastly, control Bluetooth...

10.1109/icics49469.2020.239511 article EN 2020-04-01

Palm oil is among the first commodity in Malaysia.The production of palm can be increased by implementing smart agriculture technology.To produce a good quality oil, soil vital.Lack information make it hard for farmer to maintain nutritious tree.Thus, real-time monitoring system has been developed Oil Soil Monitoring Smart Agriculture.The measured pH, moisture and tilt soil.These parameters were essential determine status alkalinity, moisture.These sensors are connected Arduino...

10.30880/ijie.2020.12.06.022 article EN International Journal of Integrated Engineering 2020-07-30

Water is essential for life. Frequent water disruption in Malaysia caused turbulence daily lives and livelihood of thousands Malaysian. The operators are facing serious challenges to ensure consumers have continuous access clean a sustainable future. River pollution had been identified be one the causes crisis Malaysia. Hence, monitoring system utilizing concept Internet Things proposed this paper. Agile model used due its simplicity. water’s pH measurement, turbidity, temperature flow can...

10.17509/ajse.v2i1.37515 article EN cc-by-sa ASEAN Journal of Science and Engineering 2021-06-23

The Industrial Internet of Things (IIoT), also known as Industry 4.0, is a forward-thinking industrial era in which numerous developing technologies are combined to produce digital solutions. In enterprises, 4.0 separated into base and front-end technologies. Cloud computing, IoT, analytics, big data all essential this article, we evaluate the current landscape factory automation influence 5G LoRA communication on smart manufacturing automation, while split four categories: goods, working,...

10.13052/jmm1550-4646.1852 article EN Journal of Mobile Multimedia 2022-04-04

Technology evolution nowadays moves vigorously to improve daily human life and directly affect the earth's resource consumption. Reducing energy consumption leads reducing carbon dioxide (CO2) emission surrounding, which can cause environmental health issues. The balance of fast data transmission with efficient is vital for achieving green IoT. One part IoT system, wireless sensor, performs a duty operate continuously without delay. That why most sensors only collect raw do packet...

10.1109/icisit54091.2022.9873051 article EN 2022-07-27

Terahertz (THz) antennas based upon photoconduction techniques in THz pulsed and continuous-wave (CW) systems are introduced compared. It is addressed that the differences excitation of these lead to different design requirements. In both antenna types, optical-to-electrical conversion efficiency very low - this means employing which can enhance generated photocurrent gap necessary. Comparison impedance matching demonstrates a much more severe problem CW system than system. Regarding...

10.1109/lapc.2013.6711907 article EN 2013-11-01

It is understood that Low-Carbon Transportation will contribute to a reduction of 29% Green House Gases (GHG). Moving towards this goal, Nadi Putra, the public transportation using natural gas in Putrajaya, Malaysia one initiatives done by Putrajaya Holdings order achieve this. Nevertheless, reliability service needs be improved attract more users. Traffic congestion results unpredictable and inconsistent journey times, especially at peak hence, IoT based system proposes provide an analytics...

10.1109/sensorsnano44414.2019.8940064 article EN 2019-07-01

Real-world applications such as habitat monitoring, air quality, natural disaster prevention, smart agriculture, and building are possible due to the utilization of Wireless Sensor Networks (WSNs). However, in most cases, classic WSN nodes fueled by non-rechargeable batteries with a limited capacity for energy storage. In this paper, solar harvesting implementation is proposed wireless sensor network increase lifetime each node. The may also ideally achieve an infinite lifetime....

10.1109/icisit54091.2022.9873006 article EN 2022-07-27

Oil palm tree has been the key to Malaysia's economic expansion, where it become most important, national agricultural crop. Techniques of planting, assessment, and detection are crucial harvest a good quality oil. At present, ripeness oil fresh fruit bunch (FFB) is determined using computer vision, eyesight, near-infrared (NIR) spectroscopy, light ranging (LiDAR), Hue, Saturation, Intensity (HSI) techniques. This research objective categorize FFB from data received sensor create...

10.1109/icics52457.2021.9464575 article EN 2021-05-24

In this work we present numerical investigations of a novel terahertz (THz) photoconductive antenna with embedded electrodes using COMSOL Multiphysics software package. Simulation results indicate that the proposed THz can store two times more effective electric energy than conventional planar electrode structures. These suggest higher power could potentially be obtained

10.1109/ucmmt.2017.8068465 article EN 2020 13th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) 2017-09-01
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