M. K. A. Ariffin

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Aluminum sulfate (alum), ferrous sulfate, ferric chloride and ferric chloro-sulfate were commonly used as coagulants. However, a possible link of Alzheimer’s disease with conventional aluminium based coagulants has become an issue in wastewater treatment. Hence, special attention has shift towards using biodegradable polymer, chitosan in treatment, which(More)
The study presents an algorithm for conflict-free Automated Guided Vehicle (AGV) routing minimizing travel time and total job tardiness. The problem is represented using one sub-chromosome for dispatching represented with random keys and the remaining sub-chromosomes for routing represented with priority-based encoding. The algorithm used weight mapping(More)
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by means, without prior permission from the author and publisher. ACKNOWLEDGEMENT It would not have been possible to write this doctoral thesis without the help and support of the kind people around me, to only some of whom it is(More)
This study was focused on investigating the optimum fluidising velocity during the combustion of rice husk in a bench-scale fluidised bed combustor (ID 210mm) to obtain low carbon ash in the amorphous form. When all other parameters are held constant, the optimum fluidizing velocity aids in almost complete combustion, thereby releasing the entrapped carbon(More)
This study presents an algorithm for automated guided vehicle system routing. Priority-based genetic algorithm was used for genetic representation. The objective is minimal path transverse time. Weight mapping crossover (WMX) and insertion mutation was used as genetic operators. Conflict detection and avoidance was incorporated into the system using node(More)
Debugging on computer program is a complex cognitive activity. Although it is complex, it’s still one of the popular issues in computer programming task. It is a difficult task, which is to understand what the error is and how to solve such error? In computer programming the difficulty is to understand the Object-Oriented programming concept together with(More)
1 Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. 2 Industrial Engineering Department, College of Engineering, Shahid Bahonar University, Kerman, Iran. 3 Institute of Advanced Technology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. 4 Department of Industrial(More)
Distribution network design is one of the important issues in supply chain management. Two important sub-problems of distribution network design are inventory and location decisions. Traditional approaches considered inventory and location decisions separately which might result in suboptimal solutions. This paper considers the design of a distribution(More)