Papers by Nurul Atirah Binti Mohd Anuar C19A0646
Offshore oil and gas pipelines are being subjected to deeper water depths, more extreme environme... more Offshore oil and gas pipelines are being subjected to deeper water depths, more extreme environmental conditions, and harsher operating requirements than ever before. Given these conditions, free spanning pipelines are becoming more common and are often unavoidable during pipeline installation. Free spans occur as a result of irregular seafloor topography at installation or during pipeline operation as a result of vibration and scour [1]. A linear-elastic finite element model is applied to the solution of stress analysis problems involving submarine pipelines freely resting upon irregular seabed profiles. This report describes a finite element (FE) modelling procedure and parametric study leading to the investigation of stress distribution and deformation subjected on pipeline. The objective of this project is to model underwater pipeline using pipe stress analysis software, CAESAR II. The pipeline will be examined on various conditions according to the geometry of the seabed. The input or load cases of the pipeline system are ocean current and wave. The FE analyses are carried out for both the fully fixed and simply supported pipes, which form the two extreme conditions of pipelines under service conditions. Expected result is that the stress of the pipelines should not exceed the maximum allowable stress set by the regulations.
Scheduled waste management is very important in environmental and health aspects. In delivering s... more Scheduled waste management is very important in environmental and health aspects. In delivering services, highway industry has been indirectly involved in producing scheduled wastes. This paper aims to define the scheduled waste, to provide a conceptual framework of the scheduled waste management in highway industry, to highlight the effect of improper management of scheduled waste and to encourage future researchers to identify and share the present practice of scheduled waste management in their country. The understanding on effective management of scheduled waste will help the operators of highway industry, the academicians, future researchers, and encourage a friendly environment around the world. The study on scheduled waste management in highway industry is very crucial as highway transverse and run along kilometers crossing the various type of environment, residential and schools. Using Environmental Quality (Scheduled Waste) Regulations 2005 as a guide, this conceptual paper...
Journal of Social Sciences, 2012
Problem statement: Associating any knowledge from ancient Egyptians to modern civilization and th... more Problem statement: Associating any knowledge from ancient Egyptians to modern civilization and thinking was important and had its own value. The process of understanding knowledge related to ancient Egyptians is actually based on the nature of philosophical thought. Approach: In the discussion of ancient Egypt philosophy, it is important to look at it from the perspectives of the four branches of philosophy; metaphysics, epistemology, axiology and logic. Metaphysics has two elements, which are ontology and cosmology. Arguments in ontology explain why most activities of people from the ancient Egypt involved agriculture and how they perceived their lives in the midst of this activity, this includes the concept of human creator; treatment to man and woman; and Egyptians' Gods and Goddesses. In addition, cosmology analyses the universe; everything inside and out of it, as well as what makes them stay and move. Results: Whereas, epistemology refers to how ancient Egyptians appreciated the existence of knowledge among them by considering the sources, types, categories and importance of particular knowledge that was gained in different ways. Besides, the aspects of axiology are also discussed here, especially in the ancient Egypt's hieroglyphics. This writing discusses the level of aesthetical value posed by all these Egyptians, even at the time of about 3000 B.C. They could discuss to form pictographic as their written language. This activity lasted for thousands of years. Conclusion: Last but not the least, logic is another aspect that can be used in the discussion across metaphysics, epistemology and also axiology, for instance, the thinking of the philosophy behind Egyptians life. This writing relates the philosophy of ancient Egypt with the life of the modern world, not only in Egypt, but also in another part of the world, which exist from the impact of the philosophy of ancient Egypt. Modern views of Egyptians' thinking are often vastly based on what their people had and thought of in the ancient days.
IOP Conference Series: Materials Science and Engineering, 2019
The Particle Swarm Optimization (PSO) is an optimization method that was modeled based on the soc... more The Particle Swarm Optimization (PSO) is an optimization method that was modeled based on the social behavior of organisms, such as bird flocks or swarms of bees. It was initially applied for cases defined over continuous spaces, but it can also be modified to solve problems in discrete spaces. Such problems include scheduling problems, where the Job-shop Scheduling Problem (JSP) is among the hardest combinatorial optimization problems. Although the JSP is a discrete problem, the continuous version of PSO has been able to handle the problem through a suitable mapping. Subsequently, its modified model, namely the discrete PSO, has also been proposed to solve it. In this paper, the performance of continuous and discrete PSO in solving JSP are evaluated and compared. The benchmark tests used are FT06 and FT10 problems available in the OR-library, where the goal is to minimize the maximum completion time of all jobs, i.e. the makespan. The experimental results show that the discrete PSO...
IOP Conference Series: Materials Science and Engineering, 2016
This paper addresses the types of particle representation (encoding) procedures in a population-b... more This paper addresses the types of particle representation (encoding) procedures in a population-based stochastic optimization technique in solving scheduling problems known in the job-shop manufacturing environment. It intends to evaluate and compare the performance of different particle representation procedures in Particle Swarm Optimization (PSO) in the case of solving Job-shop Scheduling Problems (JSP). Particle representation procedures refer to the mapping between the particle position in PSO and the scheduling solution in JSP. It is an important step to be carried out so that each particle in PSO can represent a schedule in JSP. Three procedures such as Operation and Particle Position Sequence (OPPS), random keys representation and random-key encoding scheme are used in this study. These procedures have been tested on FT06 and FT10 benchmark problems available in the OR-Library, where the objective function is to minimize the makespan by the use of MATLAB software. Based on the experimental results, it is discovered that OPPS gives the best performance in solving both benchmark problems. The contribution of this paper is the fact that it demonstrates to the practitioners involved in complex scheduling problems that different particle representation procedures can have significant effects on the performance of PSO in solving JSP.
2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, 2011
2011 Fourth International Conference on Modeling, Simulation and Applied Optimization, 2011
This paper addresses a scheduling problem known in the job-shop industrial environment and recomm... more This paper addresses a scheduling problem known in the job-shop industrial environment and recommends solving the problem using the Microsoft Excel spreadsheet and an add-in that provides Genetic Algorithm which is capable of solving complex scheduling problems. The authors selected total weighted tardiness and sum of earliness and tardiness penalties as performance measures to determine the quality of the solution.
Project management has emerged as a field of practice that is being used increasingly by organiza... more Project management has emerged as a field of practice that is being used increasingly by organizations to achieve their business goals. Since the concept ‘survival of the fittest’ best describes today's business environment, good project management performance assessment tools are needed in order to make an organization ‘the best of the best’. Project completion within time and cost, while maintaining
2008 Ninth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing, 2008
Abstract Compared to traditional middleware, adaptive middleware enables modification of the beha... more Abstract Compared to traditional middleware, adaptive middleware enables modification of the behavior of distributed applications in response to some changes in functional requirements or operating conditions. RFID applications in particular have grown widely ...
International Journal of Learning and Development, 2012
This paper attempts to explore the perspective of philosophy of education from Home Economics sub... more This paper attempts to explore the perspective of philosophy of education from Home Economics subjects. Home Economics subjects that are part of the education curriculum in Malaysia have a clear direction and strategy in realizing the nation's desire to produce balanced and highly skilled human resources. Home Economics is not a trashy subject to be underestimated because, ironically, it supports the philosophy and ideals towards the nation's ambition. Without philosophy, there is no path that can be used as a guide to strengthen the actions and direction of educational philosophy. And without that support, the struggle of technical and vocational education can't give an impact on the industry and accomplish the aspirations of the nation as a whole. From the perspective of philosophy, the arguments in
History matching is a process of altering parameters in a reservoir simulator in order to match p... more History matching is a process of altering parameters in a reservoir simulator in order to match production performance with observed historical data. There are two methods of history matching; manual history matching, which is the most common approach, and another method is assisted history matching. However, most of the reservoirs in reality are heterogeneous and it requires experience and time to rely on trial and error methods. Assisted history matching can be an alternative solution in saving time thus, using optimization process needs to be further developed and improved to be implemented. The main objective of this project is to investigate the applicability of Recursive Least Squares (RLS) for parameter estimation methods in assisted history matching. Currently not much attention is given for using RLS for history matching purposes. Even though RLS is a simple and effective method to estimate parameters, RLS have stability problem when number of parameters is high. Therefore, in this project, Principal Component Analysis (PCA) is used to reduce the number of parameters. The project is divided to several steps; in which the first step is to develop a conceptual model which can be used to generate both synthetic historical data and also simulated data. Forward model was also involved in the process of defining the objective function. Next, using simulated data together with historical data, objective function will be computed. This project will study the applicability of the combined algorithm for history matching problem. The study conducted on PCA and RLS method shows high chances of success in applying these methods for history matching problem. The algorithm formulated also can easily be practiced, provided with ample knowledge of numerical computational tool to implement it. When RLS and PCA are applied, the result obtained with estimated parameter results in lower mean squared error (MSE) between historical and matched result which is 0.75% compared to MSE between historical and simulated which is 5.17%. This proves that when RLS is applied, almost 5% of error can be reduced and thus can result in better forecasting of the reservoir production performance.
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Papers by Nurul Atirah Binti Mohd Anuar C19A0646