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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.


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.


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.


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.

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