Institution
National University of Malaysia
Education•Kuala Lumpur, Malaysia•
About: National University of Malaysia is a education organization based out in Kuala Lumpur, Malaysia. It is known for research contribution in the topics: Population & Heat transfer. The organization has 26593 authors who have published 41270 publications receiving 552683 citations. The organization is also known as: NUM & Universiti Kebangsaan Malaysia.
Topics: Population, Heat transfer, Thin film, Membrane, Photovoltaic system
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors highlight the broad-spectrum of different nano-composite materials that have been used as electrode material in the MFC in recent years and highlight the benefits of these materials.
192 citations
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TL;DR: In this article, the major mathematics skills and cognitive abilities in learning that caused the difficulties in mathematics problems-solving among students from students' point of view were discussed and a mixed qualitative and quantitative approach is used in order to have clearer understanding.
192 citations
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TL;DR: Under noncycloplegic conditions, all three autorefractors have a tendency towards minus over correction in children resulting in over diagnosis of myopia, however autore fractors were accurate under cycloplegics conditions.
191 citations
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TL;DR: In this article, the steady flow of an incompressible viscous fluid due to a rotating disk in a nanofluid is studied and the transformed boundary layer equations are solved numerically by a finite difference scheme, namely the Keller-box method.
Abstract: The steady flow of an incompressible viscous fluid due to a rotating disk in a nanofluid is studied. The transformed boundary layer equations are solved numerically by a finite difference scheme, namely the Keller-box method. Numerical results for the flow and heat transfer characteristics are obtained for various values of the nanoparticle volume fraction parameter φ and suction/injection parameter h0. Two models for the effective thermal conductivity of the nanofluid, namely the Maxwell–Garnett model and the Patel model, are considered. It is found that for the Patel model, the heat transfer rate at the surface increases for both suction and injection, whereas different behaviors are observed for the Maxwell–Garnett model, i.e. increasing the values of φ leads to a decrease in the heat transfer rate at the surface for suction, but increases for injection. The results of this study can be used in the design of an effective cooling system for electronic components to help ensure effective and safe operational conditions.
190 citations
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TL;DR: The GSA-KM algorithm helps the k-means algorithm to escape from local optima and also increases the convergence speed of the GSA algorithm, which uses the advantages of both algorithms.
Abstract: Clustering is an attractive and important task in data mining that is used in many applications. Clustering refers to grouping together data objects so that objects within a cluster are similar to one another, while objects in different clusters are dissimilar. K-means is a simple and efficient algorithm that is widely used for data clustering. However, its performance depends on the initial state of centroids and may trap in local optima. The gravitational search algorithm (GSA) is one effective method for searching problem space to find a near optimal solution. In this paper, we present a hybrid data clustering algorithm based on GSA and k-means (GSA-KM), which uses the advantages of both algorithms. The GSA-KM algorithm helps the k-means algorithm to escape from local optima and also increases the convergence speed of the GSA algorithm. We compared the performance of GSA-KM with other well-known algorithms, including k-means, genetic algorithm (GA), simulated annealing (SA), ant colony optimization (ACO), honey bee mating optimization (HBMO), particle swarm optimization (PSO) and gravitational search algorithm (GSA). Five real and standard datasets from the UCI repository have been used to demonstrate the results of the algorithms. The experimental results are encouraging in terms of the quality of the solutions and the convergence speed of the proposed algorithm.
190 citations
Authors
Showing all 26827 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jonathan E. Shaw | 114 | 629 | 108114 |
Sabu Thomas | 102 | 1554 | 51366 |
Biswajeet Pradhan | 98 | 735 | 32900 |
Haji Hassan Masjuki | 97 | 502 | 29653 |
Mika Sillanpää | 96 | 1019 | 44260 |
Choon Nam Ong | 86 | 444 | 25157 |
Keith R. Abrams | 86 | 355 | 30980 |
Kamaruzzaman Sopian | 84 | 989 | 25293 |
Benedikt M. Kessler | 82 | 385 | 24243 |
Michel Marre | 82 | 444 | 39052 |
Peter Willett | 76 | 479 | 29037 |
Peter F. M. Choong | 72 | 532 | 18185 |
Nidal Hilal | 72 | 395 | 21524 |
Margareta Nordin | 72 | 267 | 19578 |
Teuku Meurah Indra Mahlia | 70 | 339 | 17444 |