Ariff N.A.M.,University Teknikal MalaysiaMelaka |
Abdullah A.,National University of Malaysia |
Nasrudin M.F.,National University of Malaysia
Lecture Notes in Electrical Engineering | Year: 2016
Image spam filtering is a challenging task because spammers are constantly creating new tricks and making anti-spam filters ineffective. To overcome these problems, many new techniques have been developed. Most of these techniques use a basic bag-of-features representation where global approach is used to extract the feature. This global representation leads to limited descriptive power for the features due to neglecting the spatial information, which can create powerful cues for classification tasks. Spatial Pyramid Representation (SPR) is one of the most effective and widely used image processing techniques that embedding spatial information into a feature. Inspired by this technique, we propose Multi Spatial Resolution (MSR) approach, which transform the image to Base-64 encoding, divided the Base-64 encoding into a sequence of increasingly finer grids on different pyramid level. The n-gram technique is used to extract the features from each grid cell or partition. Frequency histogram for each partition is concatenated to form a single feature vector. The experiments were conducted on Dredze and SpamArchive data sets at four different resolutions using SVM classifier. The results show that MSR increased the classification performance compared to global approach. © Springer International Publishing Switzerland 2016.
Al Mahmud K.A.H.,University of Malaya |
Kalam M.A.,University of Malaya |
Masjuki H.H.,University of Malaya |
Abdollah M.F.B.,University Teknikal MalaysiaMelaka
Tribology Transactions | Year: 2015
Maintaining a clean environment is the major concern of industries that produce fuel and lubricants for automotive applications. Thus, vegetable-based oils are being explored for the preparation of biobased lubricants because of their biodegradability and nontoxicity. Despite their low thermal stability, vegetable oils show better tribological characteristics than mineral oils. Nonetheless, the thermal stability of vegetable oils could be improved by transesterification. In this study, three vegetable-based oils (sunflower, palm, and coconut) were used to investigate the tribological properties of ta-C diamond-like carbon (DLC) coating under DLC–steel contact condition. A BICERI ball-on-a plate tribotesting machine was used to conduct experiments. During the experiment, test contacts of tribopairs lubricated with sunflower oil exhibited better tribological characteristics than those using coconut oil as a lubricant. © 2015, Copyright © Society of Tribologists and Lubrication Engineers.
Huat T.C.,University Teknikal MalaysiaMelaka |
Manap N.A.,University Teknikal MalaysiaMelaka |
Darsono A.M.,University Teknikal MalaysiaMelaka
International Journal of Applied Engineering Research | Year: 2016
Double Stage Filter (DSF) is a hybrid stereo matching algorithm which involves the combination of basic existing stereo matching algorithms such as basic block matching dynamic programming, basic median filtering and additional new method of segmentation. The proposed hybrid stereo matching algorithm produced good results of disparity map and evaluated using evaluation functions such as Mean Square Errors (MSE), Peak Signal to Noise Ratio (PSNR) and Structural Similarity Index Metric (SSIM). The main concern of the development of DSF is on the post-processing part of stereo matching, which is to reduce or remove the noises and horizontal streaks that can be found in the raw disparity map through dynamic programming approach. The major part of DSF is on the post-processing steps that involve segmentation and median filtering process. The results of disparity map obtained through DSF algorithm and other existing stereo matching algorithms by using stereo pair that captured from LNC IP camera. The performance and results of objective and subjective evaluation on disparity maps obtained from Basic Block Matching (BBM), Dynamic Programming(DP) and Double Stage Filter (DSF) are presented in this paper. © Research India Publications.
Aras M.S.M.,University Teknikal MalaysiaMelaka |
Abdullah S.S.,Malaysia Japan International Institute of Technology |
Othman S.Y.B.,University Teknikal MalaysiaMelaka |
Sulaiman M.,University Teknikal MalaysiaMelaka |
And 3 more authors.
Journal of Theoretical and Applied Information Technology | Year: 2016
Nowadays, unmanned underwater vehicle (UUV) is created to reduce human intervention in deep-water application. UUV can help human to make an underwater application that commonly used in deep water industries. During operation, the UUV undergoes a complex multi-axis motion trajectories that are highly nonlinear because the subsystems in the UUV are ill-defined and strongly coupled to each other. The conventional controller such as Proportional, Integral and Derivative (PID) and Proportional and Derivative (PD) have a problem to control nonlinear operation. The conventional controller hardly to achieve zero overshoot. Implementation of the controller on the UUV using Fuzzy Logic Controller (FLC) itself poses its own level of complexity. Consequently, implementation of FLC also requires fast and high-performance processors. The objectives of this paper are to study the effect of the tuning membership function to improved performances of the FLC for depth control using actual underwater Remotely Operated Vehicle (ROV) based on VideoRay ROV Pro III as well as to analyze performance of system response of depth control in terms of zero overshoot, faster rise time and small steady state error. Then, the proposed approach is verified using hardware interfacing between MATLAB/Simulink and Microbox 2000/2000C. The result shows FLC gives rather best performance in term of faster rise time, zero overshoot and small steady state error as compared with conventional controllers. © 2005 - 2016 JATIT & LLS. All rights reserved.
Arif S.,University Teknikal MalaysiaMelaka |
Sidek S.,University Teknikal MalaysiaMelaka
Asian Social Science | Year: 2015
The increase number of cases on the misuse of halal logo and questionable status of halal food has raised many concerns among the Muslim consumers regarding the status of halal food in Malaysia. The various reports on the issues of fraud in halal food also indicate that there are weaknesses in the procedure of determining halal food. In this case, an investigation on the procedures and standard reference used by the Department of Islamic Development Malaysia (JAKIM) to determine halal food in Malaysia needs to be conducted in order to gain the consumer’s trust and confidence on JAKIM’s logo. This study advocates that the concept of halalan tayyiban should be used as the framework to determine halal products as it considers both the physical and spiritual benefits of the food to mankind. So far, it has not been proven that the standard references used by JAKIM are consistent with this concept. Specifically, this study aimed to investigate the application of halalan tayyiban in the standards and procedures used by JAKIM to determine halal food in Malaysia. For this purpose, a framework for determining halal food based on the concept of halalan tayyiban has been developed. Four main standard references used by JAKIM, namely the Malaysian Standard MS 1500, MS 1480, MS 1514, Halal Food Manual Procedures, Food Acts 1983 and Food Regulations 1985 were then analysed based on the developed framework. Additionallly, semi-structured interviews were conducted with selected key personnel from JAKIM to verify the application of halalan tayyiban in the procedure of issuing halal food certification. This study revealed that the standard references used by JAKIM were consistent with the concept of halalan tayyiban. The practice taken by JAKIM’s personnel to issue the halal food certification also conformed to the concept of halalan tayyiban. It can be concluded that JAKIM has applied the concept of halalan tayyiban in determining halal food in Malaysia. These findings help to improve the consumers’ confidence on the food determined as halal by JAKIM. They also contribute to development of the well-being and sustainability of a community, especially the Muslim community. © 2015, Canadian Center of Science and Education. All rights reserved.
Hami N.,Northern University of Malaysia |
Muhammad M.R.,University Teknikal MalaysiaMelaka |
Ebrahim Z.,University Teknikal MalaysiaMelaka
Jurnal Teknologi | Year: 2015
This study analyzes the causal relationship between sustainable manufacturing practice (SMP) and environmental sustainability as well as determines the mediating effect of innovation performance (IP) on the relationship between SMP and environmental sustainability. Adaptation from the changing business environment, manufacturing firms are facing great challenge on producing more products with less resource consumption, pollution emitted and waste generated. Using structural equation modeling, the survey data collected from 150 Malaysian manufacturing firms has been analyzed in this study. The empirical results show that both types of SMP have a positive and significant impact on environmental sustainability with external SMP is greater than internal SMP. However, there is no significant evidence to prove IP as a mediator for SMP-environmental sustainability linkage. The findings of this paper have important implication in both theoretical and practical perspectives. While provide better understanding of the phenomena by simultaneously analyzing a series of dependence relationships among SMP, IP and environmental sustainability, these results could help managers to understand the types of practices that would improve their environmental performance. © 2015 Penerbit UTM Press. All rights reserved.
Jamil J.F.,University Teknikal MalaysiaMelaka |
Abdullah M.A.,University Teknikal MalaysiaMelaka |
Tamaldin N.,University Teknikal MalaysiaMelaka |
Mohan A.E.,University Teknikal MalaysiaMelaka
Jurnal Teknologi | Year: 2015
The world is demanding for alternative way of energy consumption for vehicle usage. The en-ergy efficient vehicle (EEV) is one of the advancement for future land transportation that known as hybrid and electric vehicles nowadays. The vehicles use different energy other than fuel which is electric energy. This paper emphasizes the development of electromagnetic energy regenerative suspension system (EReSS) as a system that harvests energy from the vibration of vehicle suspension system. The harvested energy is converted to electrical energy for vehicle usage. A prototype of electromagnetic EReSS is fabricated and laboratory experimentation on test rig is conducted to test the voltage output. It is observed that the EReSS can harvest the wasted energy from the vibration and produce sufficient electric energy for the vehicle electri-cal and electronic usage. The number of windings of the coil and diameter of the coil affect the voltage output of the EReSS. The voltage output of the EReSS can be optimized by setting up the parameters. As the EReSS is proven to harvest energy, it can be used on hybrid and electric vehicle to improve the efficiency of the vehicle and reduce the fuel consumption. © 2015 Penerbit UTM Press. All rights reserved.
Ali N.M.,University Teknikal MalaysiaMelaka |
Karis M.S.,University Teknikal MalaysiaMelaka |
Abidin A.F.Z.,University Teknikal MalaysiaMelaka |
Bakri B.,University Teknikal MalaysiaMelaka |
And 2 more authors.
Jurnal Teknologi | Year: 2015
Over the years, traffic sign detection and recognition systems gives extra value to driver assistance when driving, leading to more user-friendly driving experience and much improved safety for passengers. As part of Advanced Driving Systems (ADAS) one can be benefitted by using this system especially with driving incapacities by alerting and aid them about the existence of traffic signs to minimized unwanted circumstances during driving such as fatigue, poor sight and adverse weather conditions. Though a various number of traffic sign detection systems have been revised in literature; the need of design with a robust algorithm still remains open for further research. This paper purposes to design a system capable of performing traffic sign detection while considering variations of challenges such as color illumination, computational difficulty and functional constraints existed. Traffic sign detection is divided into three main parts namely; Pre-processing, Color segmentation and Thresholding. The color segmentation method is vital as it presents a detailed investigation of vision based color spaces in this case RGB, HSV and CMYK considering varying illumination conditions under different environments. This paper further highlights possible improvements to the proposed approaches for traffic sign detection. © 2015 Penerbit UTM Press. All rights reserved.
Saipullah K.M.,University Teknikal MalaysiaMelaka |
Ismail N.A.,University Teknikal MalaysiaMelaka
Journal of Theoretical and Applied Information Technology | Year: 2015
A new method of determine Halal logo is proposed in this paper. It is based on the fractionalized principle magnitude (FPM) algorithm using the magnitude of the 1D Fourier transform. Compared with other logo detection methods that is HOG, Hu moment, Zernike and WCH, this method has the advantage which is achieve the highest average classification accuracy and also time classification. The proposed method have test on the traffic sign and texture database involving logo. Experiment show that the proposed method is achieve the excellence result and able to fight with the previous method. © 2005 - 2015 JATIT & LLS. All rights reserved.
Puvanasvaran P.,University Teknikal MalaysiaMelaka |
Tian R.K.S.,University Teknikal MalaysiaMelaka |
Vasu S.A.,University Teknikal MalaysiaMelaka
Journal of Industrial Engineering and Management | Year: 2014
Findings: The findings of this study are a new model called Lean Environmental Management Integration System (LEMIS) has been developed and leads to the creation of these measurement standards for evaluating the organization, making its environmental efforts more realistic, focused and attainable.Research limitations/implications: Future research should be conducted case studies in this direction are required to be conducted for examining the feasibility of amalgamation and implementing ISO 14001:2004 standards with the philosophy of Lean Principles to enable the achievement of world class standards.Practical implications: This model helps to eliminate any wasteful processes in the organization’s implementation of the ISO 14001 standard thus leading to higher environmental performance. Integrating the standard with Lean principles through LEMIS model helps to specify these performance measures making the standard achieve sustainability and continual improvement.Originality/value: This study presents a unique approach of integrating the two main models, namely Lean Principles and ISO 14001 Environmental Management System, as a single framework benefiting contemporary organizations.Purpose: The purpose of this study is to present a model for integrating Lean Principles with ISO 14001 Environmental Management System.Design/methodology: To achieve the objective of the study, the methodology used in this study is based on preliminary literature review of ISO 14001 standards and Lean Principles as well as certain case reports from various proponents and authors of ISO 14001 and Lean as noted in various articles and journals and some books. © 2014, Universitat Politecnica de Catalunya. All rights reserved.