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This paper presents a modeling and simulation, in Matlab/Simulink environment, of a stand-alone solar PV system in order to analyse its performance under irradiation and load variations. Indeed, to supply an alternative load with a sinusoidal line without harmonic distortion under weather conditions, a MPPT (Maximum Power Point Tracking) algorithm has used to control a DC-DC boost converter to generate...
The chicken industry is the largest component in the farming industry in Malaysia. It is among the main contributors to the sources of nutrition in Malaysia. The chicken barn condition must be ideal for good growth rate of the animal. Therefore, by monitoring and controlling the temperature, humidity and hazardous volatile compounds inside the barn will ensures good animal growth. The environments...
We discuss caveats and challenges in crowdsourcing subjective image quality evaluation studies that use real consumer photos with non-simulated distortions. The subtle nature of consumer image artifacts as well as the nuanced quality differences among photos from various consumer devices, necessitate that crowdsourcing studies be designed with extra caution. In this work, we point out certain caveats...
This paper presents a comparative study between two algorithms techniques which are Incremental Conductance and Perturb and Observe used to maximize the efficiency of the solar generator under variations of solar irradiation, temperature and electrical loads. Indeed, the Maximum Power Point Tracking algorithms are used to control a DC-DC boost converter to generate the Maximum Power Point of the generator...
Over the last two decades, traffic congestion has become a "worldwide" phenomenon as a result of increased motor vehicles and population growth. Emerging wireless technologies, such as Radio Frequency Identification (RFID) networks, have a significant impact on improving the efficiency of the road traffic management system in Alexandria. In this paper, we propose an intelligent road-traffic-management...
The estimation of forest health can be considered as one of the main challenges in modern biology. Some animal species, including taxa often used in biodiversity studies, produce active sounds during their social interactions or in other contexts such as mating, feeding and etc. Acoustic entropy index (H) of alpha diversity composed of two sub-indices which is the temporal entropy index (Ht) and spectral...
Almost all robotics applications require accurate robot positioning. However, most of the developed methods lacks in ground truth reference to verify its accuracy relative to the real world. This paper proposes an effective vision based system to accurately track mobile robot's true position and orientation using multiple overhead cameras. This system is able to track and localize multiple mobile...
Recent blackouts have shown the need for an innovative wide-area monitoring and control (WAMC) systems. With PMUs now embedded in protective relays, and the availability of fast processing technologies, many real-time wide-area protection and control schemes can be implemented. An Out-of-Step (OOS) event that occurs between two connected areas in the power system, can ultimately result in a total...
Traditional 35mm film cameras are no longer the main devices today's consumers use to capture images. Though the dominant technology has shifted to digital cameras and displays that differ widely in pixel count and resolution, our understanding of the quality impact of these variables lags. This paper explores the quality impact of resolution within this new paradigm. Images were collected from 23...
Significant improvement in no-reference image quality assessment (NR-IQA) methods has been demonstrated in recent years. The demonstrated prediction performance of proposed NR-IQA methods, in terms of correlations between predicted and subjective scores, has reached similar performance levels with full-reference image quality assessment (FR-IQA) measures, on popular image datasets. However, in our...
Indoor air quality nowadays playing an important role to make sure the environment is safe for human health. The air quality can be monitored using good sensitivity sensors for gas detection and data collection. High sensitivity sensors can be improved by optimize data acquisition system to collect and transfer the data. I2C interface buses that use two wires to transfer and receive any data communication...
Oil palm has many usages and mainly is used in food, detergent and medical products. However, the crop is susceptible to diseases where one of them, the Basal Stem Rot (BSR) disease, is affecting oil palm plantations in Malaysia and Indonesia. Currently, most of the detection techniques in treating the disease require detailed operating procedures and some are still not fully tested. In this paper,...
Ultrasonic sensor is one of the most cost-effective sensor used to obtain range information and obstacle avoidance. Due to its simplicity, this sensor is widely used in mobile robot applications to acquire environment features and mapping. Although the sensor can track a still or moving target, it does not provide information on the shape and pattern of the detected object. This paper proposes and...
High performance fibre reinforced concrete (HPFRC) is relatively an advance fibre reinforced concrete (FRC) material, which is made of more than 2% volume fraction of fibres. This research focuses on the effect of tropical climate on the compressive strength of HPFRC. Total of 56 HPFRC cubes made of 3%, 4% and 5% of hooked-end fibres and grade 80 slurry were prepared. Half of which were exposed to...
We propose a no-reference algorithm for video quality evaluation. The algorithm relies on a natural scene statistics (NSS) model of video DCT coefficients as well as a temporal model of motion coherency. The proposed framework is tested on the LIVE VQA database, and shown to correlate well with human visual judgments of quality.
In current study, simulation analysis was conducted to investigate the fluid/structure interaction (FSI) phenomenon in two, three, and four stacking chips package with through silicon via (TSV) during encapsulation process. In actual packaging, the visualization of FSI phenomenon is very hard due to the package size limitation, low availability of suitable equipment, and high experimental setup cost...
This paper is concerned with the thermal-mechanical fatigue (TMF) behaviour of 9–12%Cr steels (P91 and P92) and of steam pipes made from them. A unified visco-plasticity model has been used in material behaviour characterization (cyclic hardening and creep relaxation), using the data obtained from iso-thermal and anisothermal experimental testing. A method for determining the material properties has...
We propose an efficient, general-purpose, distortion-agnostic, blind/no-reference image quality assessment (NR-IQA) algorithm based on a natural scene statistics model of discrete cosine transform (DCT) coefficients. The algorithm is computationally appealing, given the availability of platforms optimized for DCT computation. We propose a generalized parametric model of the extracted DCT coefficients...
Inspite of the huge amounts of image data on the web, mining image data from the web is paid less attention than mining text data, since treating the semantics of images is much more difficult. This paper introduces a new system to mine visual knowledge on the web that aims to build a Domain Oriented Image Directory by using the Earth Mover's Distance and Color signatures. Instead of using a flat...
General-purpose no-reference image quality assessment approaches still lag the advances in full-reference methods. Most no-reference methods are either distortion specific (i.e. they quantify one or more distortions such as blur, blockiness, or ringing), or they train a learning machine based on a large number of features. In this approach, we propose a discrete cosine transform (DCT) statistics-based...
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